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{{Short description|Abstract state of being clean and free from dirt}}
'''Cleanliness''' is the absence of [[dirt]], including [[dust]], [[stain]]s and bad [[smell]]s. In more recent times, since the [[germ theory of disease]], it has also come to mean an absence of [[germ]]s and other [[hazardous waste|hazardous materials]]. A recent shift has now taken place to recognise that ‘dirt’ may play a useful role in our immune systems. This shift in thinking can be traced back to 1989, when David Strachan put forth the "[[hygiene hypothesis]]" in the British Medicine Journal. Strachan looked at the records of 17,000 British children and found that the greater number of older siblings they had, the less likely they were to come down with hay fever—a disease which, despite its name, is far more common in the city than the country. Strachan wondered if the older children were bringing home more viral infections to their younger siblings, priming their immune systems so they could better tolerate pollen. The "[[hygiene hypothesis]]" has now been linked with asthma, allergies, intestinal diseases including Crohns disease, childhood leukaemia and atopic dermatitis and the list is growing.
{{Distinguish|Cleanness|Cleaning}}
It can apply to [[human]]s, [[animal]]s, [[clothing]], [[eating]] utensils, plates, pans, cups, etc., [[food]], other movable objects, floors, [[window]]s, [[wall]]s, [[toilet]]s, etc.


'''Cleanliness''' is both the state of being clean and free from [[Germ (microorganism)|germs]], [[dirt]], [[Trash (garbage)|trash]], or [[waste]], and the habit of achieving and maintaining that state. Cleanliness is often achieved through [[cleaning]]. Culturally, cleanliness is usually a good quality, as indicated by the [[aphorism]]: "Cleanliness is next to [[Godliness]]",<ref>{{Cite book |last=Hoy |first=Suellen |title=Chasing Dirt: The American Pursuit of Cleanliness |year=1995 |publisher=Oxford University Press |page=3|url=https://archive.org/details/chasingdirtameri0000hoys|url-access=registration|isbn=0-19-511128-1}}</ref> and may be regarded as contributing to other ideals such as [[health]] and [[beauty]].
"Cleanliness is next to [[God]]liness," a common phrase, describes humanity's high opinion of being clean.


The concept of cleanliness emphasizes an ongoing procedure or set of habits for the purpose of maintenance and prevention. In this it differs from {{linktext|purity}}, which is a physical, moral, or ritual state of freedom from pollutants. Whereas purity is usually a quality of an individual or substance, cleanliness has a social dimension.<ref>{{cite book|first=Elizabeth|last=Shove|title=Comfort, Cleanliness, and Convenience: The Social Organization of Normality|publisher=Berg|year=2003|page=80|isbn=1-85973-630-0|issn=1472-2895|url=https://archive.org/details/comfortcleanline0000shov|url-access=registration}}</ref> "Cleanliness", observed [[Jacob Burckhardt]], "is indispensable to our modern notion of social perfection".<ref>Jacob Burckhardt, ''The Civilization of the Renaissance in Italy'', as quoted by {{Cite book |last=Blow |first=Douglas |title=The Culture of Cleanliness in Renaissance Italy |date=2006 |publisher=Cornell University Press |page=1}}</ref> A household or workplace may be said to exhibit cleanliness, but ordinarily not purity. Cleanliness is also a characteristic of people who maintain cleanness or prevent dirtying.
Purposes of cleanliness include [[health]], [[beauty]], absence of offensive odor, avoidance of [[shame]], and to avoid the spreading of [[dirt]] and contaminants to oneself and others. In the case of glass objects such as windows or windshields, the purpose can also be [[transparency (optics)|transparency]].


[[Washing]] is one way of achieving cleanliness, usually with [[water]] and often some kind of [[soap]] or [[detergent]].
Cleanliness is related to [[hygiene]] and [[disease]] prevention. [[Washing]] is one way of achieving physical cleanliness, usually with [[water]] and often some kind of [[soap]] or [[detergent]]. [[Cleaning]] procedures are also important in many forms of manufacturing.


As an assertion of [[Morality|moral]] superiority or respectability, cleanliness has played a role in establishing [[cultural values]] in relation to [[social class]], [[humanitarianism]], and [[cultural imperialism]].<ref>{{multiref2
{{wiktionary}}
|1={{Cite book |last=Brown |first=Kathleen M. |title=Foul Bodies: Cleanliness in Early America |year=2009 |publisher=Yale University Press |page=327|url=https://archive.org/details/foulbodiescleanl0000brow_v5i6|url-access=registration}}
|2={{cite book|first=Iris Marion|last=Young|author-link=Iris Marion Young|chapter=The Scaling of Bodies and the Politics of Identity|title=From Modernism to Postmodernism: An Anthology|editor-first=Lawrence E.|editor-last=Cahoone |publisher=Blackwell|year=2003|edition=2nd|page=372|isbn=978-0-631-23213-1}}
|3={{cite book|first=Nancy|last=Cook|title=Gender, Identity, and Imperialism: Women Development Workers in Pakistan|publisher=Macmillan|year=2007|page=141}}
}}</ref>

==Hygiene==
{{Main|Hygiene}}

Since the [[germ theory of disease]], cleanliness has come to mean an effort to remove germs and other [[hazardous waste|hazardous materials]]. A reaction to an excessive desire for a germ-free environment began around 1989, when [[David P. Strachan|David Strachan]] put forth the "[[hygiene hypothesis]]" in the ''[[BMJ|British Medical Journal]].'' This hypothesis holds that environmental microbes help develop the human immune system; the fewer germs people are exposed to in early childhood, the more likely they are to experience certain health problems in childhood and as adults. However, the [[valuation (ethics)|valuation]] of cleanliness also has a social and cultural dimension beyond the requirements of hygiene for practical purposes.

==Industry==
Certain processes in industry, such as those related to [[integrated circuit]] manufacturing, require conditions of exceptional cleanliness. These are achieved by working in [[cleanroom]]s. Cleanliness is essential to successful [[electroplating]], since molecular layers of oil can prevent adhesion of the coating. The industry has developed specialized techniques for [[parts cleaning]], as well as tests for cleanliness. The most commonly used tests rely on the wetting behaviour of a clean hydrophilic metal surface. Cleanliness is important to [[vacuum]] systems to reduce [[outgassing]]. Cleanliness is crucial for [[semiconductor]] manufacturing.<ref>{{Cite book |last1=Chang |first1=C.Y. |last2=Kai|first2=Francis|title=GaAs High-Speed Devices: Physics, Technology, and Circuit Applications |year=1994 |publisher=John Wiley |page=116|isbn=0-471-85641-X}}</ref>

==Ethics==
Some studies show a positive correlation between cleanliness and ethical judgements.<ref>{{cite web | url=https://www.livescience.com/7149-people-wash-sins.html | title=People Really do Wash Away Sins | website=[[Live Science]] | date=7 September 2006 }}</ref><ref>{{cite web | url=https://www.livescience.com/5811-cleanliness-foster-morality.html | title=Cleanliness May Foster Morality | website=[[Live Science]] | date=24 October 2009 }}</ref><ref>{{cite web | url=https://www.livescience.com/5201-clean-people-judgmental.html | title=Clean People Are Less Judgmental | website=[[Live Science]] | date=December 2008 }}</ref><ref>{{cite web | url=https://www.livescience.com/9909-hand-washing-wipes-buyer-remorse.html | title=Hand-Washing Wipes Away Buyer's Remorse | website=[[Live Science]] | date=6 May 2010 }}</ref>

==Religion==
{{further|Ritual cleanliness}}

=== In Christianity ===
{{Main|Ablution in Christianity|Hygiene in Christianity}}
{{See also|Lavabo}}
[[File:Agkistro Byzantine bath.jpg|thumb|[[Agkistro]] Byzantine bath.]]
The [[Bible]] contains descriptions of many rituals of purification relating to [[menstruation]], [[childbirth]], [[religion and sexuality|sexual relations]], [[skin disease]], [[death]], [[korban|animal sacrifice]]s, and toilet etiquette.<ref>{{Cite book |last=Riches |first=John K.|title=The Bible: A Very Short Introduction |year=2000 |publisher=Oxford University Press |isbn=978-0192853431 |location=Oxford |at=ch. 1|url=https://archive.org/details/bibleveryshortin0000rich|url-access=registration}}</ref> Certain Christian rules of purity have implications for bodily hygiene and observing cleanliness,<ref>{{Cite book |last=Portmann |first=John |title=The Ethics of Sex and Alzheimer's |date=2013 |publisher=Taylor & Francis |isbn=9781135122126 |pages=13–18}}</ref> including [[sexual hygiene]],<ref>{{Cite book |last1=Engler |first1=Stausberg |title=The Oxford Handbook of the Study of Religion |last2=Michael |first2=Jackson |year=2016 |publisher=Oxford University Press |isbn=9780198729570 |location=Oxford |pages=610–615}}</ref> [[menstruation]] and toilet etiquette.<ref name="E. Clark">{{Cite book |last=Clark |first=Mary E. |title=Contemporary Biology: Concepts and Implications |year=2006 |publisher=University of Michigan Press |isbn=9780721625973 |page=613 |quote=Douching is commonly practiced in Catholic countries. The bidet... is still commonly found in France and other Catholic countries.}}</ref> In certain [[Christian denomination|denominations of Christianity]], cleanliness includes a number of regulations involving cleanliness before [[Christian prayer|prayer]],<ref name="9781611689556 p46-48">{{Cite book |last=Wahrman |first=Miryam Z. |title=The Hand Book: Surviving in a Germ-Filled World |year=2016 |publisher=ForeEdge |isbn=9781611689556 |pages=46–48 |quote=Water plays a role in other Christian rituals as well.... In the early days of Christianity, two to three centuries after Christ, the lavabo (Latin for “I wash myself”), a ritual handwashing vessel and bowl, was introduced as part of Church service.|url=https://archive.org/details/handbooksurvivin0000wahr|url-access=registration}}</ref> observing days of [[ritual purification]],<ref>{{Cite book |last=Bulzacchelli |first=Richard H. |title=Judged by the Law of Freedom: A History of the Faith-works Controversy, and a Resolution in the Thought of St. Thomas Aquinas |year=2006 |publisher=[[University Press of America]] |isbn=9780761835011 |page=19 |quote=The Ethiopian and Coptic Churches distinguishes between clean and unclean meats, observes days of ritual purification, and keeps a kind of dual Sabbath on both Saturday and Sunday.}}</ref> as well as those concerning diet and apparel. The [[Ethiopian Orthodox Tewahedo Church]] prescribes several kinds of [[hand washing]], for example after leaving the latrine, lavatory, or bathhouse, or before prayer, or after eating a meal.{{cn|reason=|date=October 2023}} Women in the [[Ethiopian Orthodox Tewahedo Church]] are prohibited from entering the church temple during [[menses]]; and men do not enter a church the day after they have had intercourse with their wives.<ref>{{Cite web |title=The Liturgy of the Ethiopian Orthodox Tewahedo Church |url=https://www.eotc.faithweb.com/liturgy.htm |website=eotc.faithweb.com|url-status=dead|archive-url=https://web.archive.org/web/20110612002523/https://www.eotc.faithweb.com/liturgy.htm|archive-date=2011-06-12}}</ref>

[[Christianity]] has always placed a strong emphasis on [[hygiene]],<ref name="Warsh">{{Cite book |first=Myra|last=Rutherdale|chapter=Ordering the Bath|editor-last1=Warsh |editor-first1=Cheryl Krasnick |title=Children's Health Issues in Historical Perspective |year=2005 |publisher=Wilfrid Laurier Univ. Press |editor-first2=Veronica|editor-last2= Strong-Boag |isbn=9780889209121 |page=315 |quote=From Fleming's perspective, the transition to Christianity required a good dose of personal and public hygiene...|url=https://archive.org/details/childrenshealthi0000unse|url-access=registration}}</ref> despite the denunciation of the [[mixed bathing]] style of Roman pools by [[early Christian]] clergy, as well as the pagan custom of women naked bathing in front of men, this did not stop the Church from urging its followers to go to public baths for bathing,<ref name="Squatriti">{{Cite book |first=Myra|last=Rutherdale|chapter=Ordering the Bath|editor-last1=Warsh |editor-first1=Cheryl Krasnick |editor-first2=Veronica|editor-last2= Strong-Boag|title=Children's Health Issues in Historical Perspective |year=2005 |publisher=Wilfrid Laurier Univ. Press |isbn=9780889209121 |page=315 |quote=...Thus bathing also was considered a part of good health practice. For example, Tertullian attended the baths and believed them hygienic. Clement of Alexandria, while condemning excesses, had given guidelines for Christian] who wished to attend the baths...|url=https://archive.org/details/childrenshealthi0000unse|url-access=registration}}</ref> which contributed to hygiene and good health according to the [[Church Father]], [[Clement of Alexandria]]. The [[Didascalia Apostolorum]], an early Christian manual, enjoined Christians to bathe themselves in those facilities that were separated by sex.<ref>{{Cite book |translator-last=Gibson |translator-first=Margaret Dunlop |title=The Didascalia Apostolorum in English |year=1903 |publisher=C.J. Clay and Sons|location=London |pages=9–10 |language=English|url=https://archive.org/details/didascaliaaposto0000unse_g7f1}}</ref> The Church also built [[public bathing]] facilities that were sex-segregated near [[Christian monasticism|monasteries]] and pilgrimage sites. The [[popes]] situated baths within church [[basilica]]s and monasteries since the early Middle Ages.<ref name="Mary Thurlkill">{{Cite book |last=Thurlkill |first=Mary |title=Sacred Scents in Early Christianity and Islam: Studies in Body and Religion |year=2016 |publisher=Rowman & Littlefield |isbn=978-0739174531 |pages=6–11 |quote=Clement of Alexandria (d. c. 215 CE) allowed that bathing contributed to good health and hygiene... Christian skeptics could not easily dissuade the baths' practical popularity, however; popes continued to build baths situated within church basilicas and monasteries throughout the early medieval period...}}</ref> Pope [[Gregory the Great]] urged his followers on value of [[bathing]] as a bodily need.<ref name="Paolo Squatriti">{{Cite book |last=Squatriti |first=Paolo |title=Water and Society in Early Medieval Italy, AD 400–1000, Parti 400–1000 |year=2002 |publisher=Cambridge University Press |isbn=9780521522069 |page=54 |quote=...but baths were normally considered therapeutic until the days of Gregory the Great, who understood virtuous bathing to be bathing "on account of the needs of body"...|url=https://archive.org/details/watersocietyinea0000squa|url-access=registration}}</ref> [[Public bathing|Public bathhouse]] were common in medieval [[Christendom]] larger towns and cities such as [[Constantinople]], [[Rome]], [[Paris]], [[Regensburg]] and [[Naples]].<ref>{{multiref2
|1={{Cite book |last=Black |first=Winston |title=The Middle Ages: Facts and Fictions |year=2019 |publisher=ABC-CLIO |isbn=9781440862328 |page=61 |quote=Public baths were common in the larger towns and cities of Europe by the twelfth century.|url=https://archive.org/details/black-the-middle-ages-facts-and-fictions}}
|2={{Cite book |title=Oxford Dictionary of Byzantium |year=1991 |publisher=Oxford University Press |isbn=978-0-19-504652-6 |editor-last=Kazhdan |editor-first=Alexander |editor-link=Alexander Kazhdan}}{{volume missing|issue=no|date=October 2023}}{{page needed|date=October 2023}}
}}</ref>

Around the time of [[Tertullian]], an [[early Church Father]], it was customary for [[Christians]] to [[Hand washing|wash their hands]] (''manulavium''), face (''capitilavium'') and feet (''pedilavium'') before [[Christian prayer|prayer]], as well as before receiving [[Holy Communion]].<ref name="Ferguson2013">{{Cite book |last=Ferguson |first=Everett |title=Encyclopedia of Early Christianity|edition=Second |year=2013 |publisher=Routledge |isbn=978-1-136-61158-2 |page=6 |language=en}}</ref> The [[rite (Christianity)|rite]] of [[footwashing]] employed a basin of water and linen towels, done in the [[imitation of Christ]].<ref name="Stutzman">{{Cite book |last=Stutzman |first=Paul Fike |title=Recovering the Love Feast: Broadening Our Eucharistic Celebrations |date=1 January 2011 |publisher=Wipf and Stock Publishers |isbn=978-1-4982-7317-6 |language=English}}</ref> A major contribution of the [[Christian missionaries]] in [[Africa]],<ref>{{Cite book |last=Newell |first=Stephanie |title=International Encyclopaedia of Tribal Religion: Christianity and tribal religions |year=2006 |publisher=Ohio University Press |isbn=9780821417096 |page=40}}</ref> [[Asia]] and other places was better [[health care]] of the people through [[hygiene]] and introducing and distributing the [[soap]]s.<ref>{{multiref2
|1={{Cite book |last=Channa |first=Subhadra |title=The Forger's Tale: The Search for Odeziaku |year=2009 |publisher=Indiana University Press |isbn=9788177550504 |page=284 |quote=A major contribution of the Christian missionaries was better health care of the people through hygiene. Soap, tooth–powder and brushes came to be used increasingly in urban areas.}}
|2={{Cite book |last=Thomas |first=John |title=Evangelising the Nation: Religion and the Formation of Naga Political Identity |year=2015 |publisher=Routledge |isbn=9781317413981 |page=284 |quote=cleanliness and hygiene became an important marker of being identified as a Christian}}
}}</ref>

=== In Hinduism===
{{main|Shaucha}}
<!--"Transfer of merit" links here. Please adjust wikilink in that article if this section is renamed or deleted. Thank you.-->

In [[Hinduism]], cleanliness is an important virtue. The ''[[Bhagavad Gita]]'' describes it as one of the divine qualities which one must practice. The [[Sanskrit]] word for cleanliness is {{IAST|[[Shaucha|śauca]]}}. The ''Bhagavad Gita'' repeats this word in five [[slokas]] at 13.8, 16.3, 16.7, 17.14 and 18.42. ''[[Śrīmad Bhāgavatam]]'' mentioned {{IAST|śauca}} at 1.16.26, 1.17.24 (as one of the four legs of [[Satya Yuga]] or Golden Age), 1.17.42, 3.28.4 (as spiritual practice), 3.31.33 (those who are addicted to sex life will not understand cleanliness), 4.29.84 (purity of {{IAST|[[Ātman (Hinduism)|ātman]]}}), 7.11.8–12 (one of the thirty qualities to be acquired), 7.11.21 (cleanliness as a characteristic of a [[Brahmin]]), 7.11.24 (cleanliness is a quality of the best worker), 11.3.24 (one should learn cleanliness to serve his or her guru), 11.17.16 (cleanliness is a natural quality of a Brahmin), 11.18.36 (cleanliness as a virtue among those who has realised God), 11.18.43 (quality to be practised by a householder), 11.21.14 (means of cleansing one body and mind), 11.19.36–39 (cleanliness means detachment from desire-prompted actions) 12.2.1 (effects of [[Kali Yuga]] on cleanliness).

''Śrīmad Bhāgavatam'' also recognises cleanliness as one of the thirty qualities which one must acquire to obtain the grace of God<ref>''Śrīmad Bhāgavatam'' 7.11.8–12</ref> and identifies internal and external cleanliness among the twelve regular duties.<ref>''Śrīmad Bhāgavatam'' 11.19.33–35</ref> Cleanliness is also an exalted quality which characterises the Satya Yuga (Golden Age) in Hinduism.

{{Blockquote|Service of the [[Deva (Hinduism)|Deva]]s (gods), holy men, teachers, parents, and wise persons, as also the observance of cleanliness, uprightness, continence, and non-injury—these constitute austerities {{bracket|{{IAST|[[Tapas (Indian religions)|tapa]]}}}} pertaining to the body.|source=''Bhagavad Gita'' 17.14}}

Cleanliness or {{IAST|śauca}} is both internal and external. Hinduism extols not only external cleanliness but also internal cleanliness or purity. Since the minds of devotees ({{IAST|[[Bhakti|bhakta]]}}) are constantly absorbed in the all-pure lord, they become internally cleansed from the defects ({{IAST|[[Kleshas (Hinduism)|kleśa]]}}) of lust, anger, greed, envy, ego, etc. In this state of mind, they naturally prefer to keep the external body and environment pure as well. Thus, in accordance with the old saying, "cleanliness is next to godliness", they are also externally pure.<ref>{{Cite web |last=Mukundananda |first=Swami |title=Chapter 12, Verse 16 – Bhagavad Gita, The Song of God – Swami Mukundananda |url=https://www.holy-bhagavad-gita.org/chapter/12/verse/16 |website=www.holy-bhagavad-gita.org}}</ref> ''Śrīmad Bhāgavatam'' explains the internal and external cleanliness as:

{{blockquote|My dear Uddhava, general cleanliness, washing the hands, bathing, performing religious services at sunrise, noon and sunset, worshiping Me, visiting holy places, chanting [[japa]], avoiding that which is untouchable, uneatable, or not to be discussed, and remembering My existence within all living entities as the [[Paramatman]] — these principles should be followed by all members of society through regulation of the mind, words and body.<ref>''Śrīmad Bhāgavatam'' 11.17.34–35</ref>}}

In ''Śrīmad Bhāgavatam'' 11.19.36–39, cleanliness is also defined as detachment from activities prompted by desire. Cleanliness, therefore, means to give up material attachment, not merely to frequently rinse one's skin with water.<ref>{{Cite web |title=Srimad Bhagavatam Canto 11 Chapter 19 Verses 36-39 |url=https://innerschool.org/spb/sb/11/19/36-39/index.html |website=innerschool.org}}</ref>

[[Hindus]] must bathe before entering [[Hindu temple|temple]]s in order to seek blessings, and temples often have [[Temple tank|tanks of water]] for this purpose. They also wash their feet before entering the temple. In some [[Orthodox Hinduism|Orthodox Hindu]] households, taking a bath after visiting a [[funeral]] ({{IAST|[[antyeṣṭi]]}}) is required by Hindus who believe that a funeral is an inauspicious thing to witness, the inauspiciousness of which will follow those who do not purify themselves.{{citation needed|date=April 2023}}

Hindus must visit the [[Rigvedic rivers|seven sacred rivers]]. Bathing in these rivers purifies the mind and increases their good merits. To invoke the presence of the holy rivers, the following mantra is chanted before the daily bath:{{citation needed|date=April 2023}}
{{poemquote|
"{{IAST|AUM gaṇge ca yamune caiva godāvarī sarasvatī / narmade siṇdhu kāverī jalesmin saṃnidhim kuru}}."
[In this water, I invoke the presence of holy waters from the rivers Ganga, Yamuna, Godavari, Sarasvati, Narmada, Sindhu and Kaveri.]
}}

Hindus clean their homes particularly well in preparing to celebrate [[Diwali]] each year as they believe that this brings good [[luck]]. Most Hindus also believe that keeping your house clean and great [[Hindu devotional movements|devotion]] are gestures to welcome the Goddess [[Lakshmi]] to their abode to stay. Some orthodox Hindus refrain from cleaning their houses on a Friday as it is a day dedicated to Goddess Lakshmi and cleaning homes on that day is considered inauspicious, so they clean their homes on other days. [[Tamil people]] also keep their homes clean in preparation for Diwali, [[Pongal (festival)|Pongal]], or [[Bhol]].{{citation needed|date=April 2023}}

===In Islam===
{{main|Ritual purity in Islam}}

[[Islam]] stresses the importance of cleanliness and personal [[hygiene]].<ref>{{Cite journal |last=Majeed |first=Azeem |date=22 December 2005 |title=How Islam changed medicine |journal=BMJ |language=en |volume=331 |issue=7531 |pages=1486–1487 |doi=10.1136/bmj.331.7531.1486 |issn=0959-8138 |pmc=1322233 |pmid=16373721}}</ref> There are many verses in the [[Quran]] that discuss cleanliness. For example, "…Truly, Allah loves those who turn to Him constantly and He 'loves those who keep themselves pure and clean" (2:222). And, "…In mosque, there are men who love to be clean and pure. Allah loves those who make themselves clean and pure" (9:108).

The first lessons in Islamic [[Catechism#Non-Christian catechisms|catechism]]s are often matters of cleanliness, with subjects including: what is clean and what is not clean, what people need to be cleansed from, how they should clean, and what should they use to clean with. [[Muslims]] are required to perform [[Ablution in Islam|ablution]] ({{transliteration|ar|[[wudu]]}}) with clean water before every prayer, and are recommended to stay in the state of ablution at all times. Abolution with dry materials ({{transliteration|ar|[[tayammum]]}}) may be used in exceptional circumstances, such as if clean water is unavailable. A ritual bath ({{transliteration|ar|[[ghusl]]}}) is performed on Fridays before the Friday Prayer ({{transliteration|ar|[[Jumu'ah|Juma]]}}). Ritual baths are recommended for spiritual purity, also after committing a sin, and are necessary for those who have watched a funeral. Special attention is given to cleaning homes before the arrival of guests or before feasts ([[Eid al-Fitr]] and [[Eid al-Adha]]), and holy days and nights.

[[Islamic hygienical jurisprudence]], which dates to the 7th century, has elaborate rules. {{transliteration|ar|[[Ritual purity in Islam|Taharah]]}} (ritual purity) involves performing {{transliteration|ar|wudu}} (ablution) for {{transliteration|ar|[[salah]]}} (five daily prayers), as well as regularly performing {{transliteration|ar|ghusl}} (bathing), which led to [[Turkish bath|bathhouses]] being built across the [[Islamic world]].<ref>{{Cite web |title=Ṭahāra &#124; Islam |url=https://www.britannica.com/topic/tahara-Islam |website=[[Encyclopedia Britannica]]}}</ref> [[Islamic toilet etiquette|Islamic toilet hygiene]] also requires [[Anal cleansing|washing with water]] after using the toilet, for purity and to minimize germs.<ref>{{Cite book |last=Israr Hasan |url=https://books.google.com/books?id=k5J493fDF38C&pg=PA144 |title=Muslims in America |date=2006 |isbn=978-1-4259-4243-4 |page=144| publisher=AuthorHouse }}</ref>

A basic form of the [[Contagious disease|contagion]]/[[germ theory of disease]] found in [[medicine in the medieval Islamic world|the medieval Islamic world]], was proposed by Persian physician [[Ibn Sina]] (also known as Avicenna) in ''[[The Canon of Medicine]]'' (1025). He mentioned that people can transmit disease to others by breath, noted contagion with [[tuberculosis]], and discussed the transmission of disease through water and dirt.<ref>{{Cite book |last=Byrne |first=Joseph Patrick |url=https://books.google.com/books?id=5KtDfvlSrDAC&pg=PA29 |title=Encyclopedia of the Black Death |date=2012 |publisher=[[ABC-CLIO]] |isbn=9781598842531 |page=29}}</ref> The concept of invisible contagion was eventually widely accepted by [[Islamic scholars]]. In the [[Ayyubid Sultanate]], they referred to such contagious substances as {{transliteration|ar|[[najasat]]}} ("impure substances"). The {{transliteration|ar|[[fiqh]]}} scholar [[Ibn al-Haj al-Abdari]] ({{circa|1250–133}}), while discussing [[Islamic dietary laws|Islamic diet]] and hygiene, gave advice and warnings about how contagion can contaminate water, food, and garments, and could spread through the water supply.<ref>{{Cite book |last=Reid |first=Megan H. |url=https://books.google.com/books?id=5fJ4AAAAQBAJ |title=Law and Piety in Medieval Islam |date=2013 |publisher=[[Cambridge University Press]] |isbn=9781107067110 |pages=106, 114, 189–190}}</ref>


==See also==
==See also==
{{Category see also|Cleaning tools|Cleaning products}}
*[[Broomstick]]
* {{annotated link|[[Antiseptic]]}}
*[[Brush]]
* {{annotated link|[[Aseptic technique]]}}
*[[Hygiene]]
* {{annotated link|[[Cleaner]]}}
*[[Remediation]]
* {{annotated link|[[Cleaning]]}}
*[[Ritual purification]]
* {{annotated link|[[Clean room]]}}
*[[Vacuum cleaner]]
* {{annotated link|[[Contamination control]]}}
*[[Clean room]]
* {{annotated link|[[Environmental remediation]]}}
* {{annotated link|[[Green cleaning]]}}
* {{annotated link|[[Hygiene]]}}
* {{annotated link|[[Lady Macbeth effect]]}}
* {{annotated link|[[Pollution]]}}
* {{annotated link|[[Ritual purification]]}}
* {{annotated link|[[Waste management]]}}

==References==
{{Reflist|2}}

{{Sister bar|auto=yes|wikt=Cleanliness}}

{{Virtues}}

{{Authority control}}


[[Category:Cleaning]]
[[Category:Hygiene]]
[[Category:Hygiene]]
[[Category:Virtues]]
[[Category:Virtue]]
[[fr:Propreté]]
[[ja:掃除]]

Latest revision as of 12:04, 4 August 2024

Not to be confused with Cleanness or Cleaning.

Cleanliness is both the state of being clean and free from germs, dirt, trash, or waste, and the habit of achieving and maintaining that state. Cleanliness is often achieved through cleaning. Culturally, cleanliness is usually a good quality, as indicated by the aphorism: "Cleanliness is next to Godliness",[1] and may be regarded as contributing to other ideals such as health and beauty.

The concept of cleanliness emphasizes an ongoing procedure or set of habits for the purpose of maintenance and prevention. In this it differs from purity, which is a physical, moral, or ritual state of freedom from pollutants. Whereas purity is usually a quality of an individual or substance, cleanliness has a social dimension.[2] "Cleanliness", observed Jacob Burckhardt, "is indispensable to our modern notion of social perfection".[3] A household or workplace may be said to exhibit cleanliness, but ordinarily not purity. Cleanliness is also a characteristic of people who maintain cleanness or prevent dirtying.

Cleanliness is related to hygiene and disease prevention. Washing is one way of achieving physical cleanliness, usually with water and often some kind of soap or detergent. Cleaning procedures are also important in many forms of manufacturing.

As an assertion of moral superiority or respectability, cleanliness has played a role in establishing cultural values in relation to social class, humanitarianism, and cultural imperialism.[4]

Hygiene

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Main article: Hygiene

Since the germ theory of disease, cleanliness has come to mean an effort to remove germs and other hazardous materials. A reaction to an excessive desire for a germ-free environment began around 1989, when David Strachan put forth the "hygiene hypothesis" in the British Medical Journal. This hypothesis holds that environmental microbes help develop the human immune system; the fewer germs people are exposed to in early childhood, the more likely they are to experience certain health problems in childhood and as adults. However, the valuation of cleanliness also has a social and cultural dimension beyond the requirements of hygiene for practical purposes.

Industry

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Certain processes in industry, such as those related to integrated circuit manufacturing, require conditions of exceptional cleanliness. These are achieved by working in cleanrooms. Cleanliness is essential to successful electroplating, since molecular layers of oil can prevent adhesion of the coating. The industry has developed specialized techniques for parts cleaning, as well as tests for cleanliness. The most commonly used tests rely on the wetting behaviour of a clean hydrophilic metal surface. Cleanliness is important to vacuum systems to reduce outgassing. Cleanliness is crucial for semiconductor manufacturing.[5]

Ethics

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Some studies show a positive correlation between cleanliness and ethical judgements.[6][7][8][9]

Religion

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Further information: Ritual cleanliness

In Christianity

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Main articles: Ablution in Christianity and Hygiene in Christianity
See also: Lavabo
Agkistro Byzantine bath.

The Bible contains descriptions of many rituals of purification relating to menstruation, childbirth, sexual relations, skin disease, death, animal sacrifices, and toilet etiquette.[10] Certain Christian rules of purity have implications for bodily hygiene and observing cleanliness,[11] including sexual hygiene,[12] menstruation and toilet etiquette.[13] In certain denominations of Christianity, cleanliness includes a number of regulations involving cleanliness before prayer,[14] observing days of ritual purification,[15] as well as those concerning diet and apparel. The Ethiopian Orthodox Tewahedo Church prescribes several kinds of hand washing, for example after leaving the latrine, lavatory, or bathhouse, or before prayer, or after eating a meal.[citation needed] Women in the Ethiopian Orthodox Tewahedo Church are prohibited from entering the church temple during menses; and men do not enter a church the day after they have had intercourse with their wives.[16]

Christianity has always placed a strong emphasis on hygiene,[17] despite the denunciation of the mixed bathing style of Roman pools by early Christian clergy, as well as the pagan custom of women naked bathing in front of men, this did not stop the Church from urging its followers to go to public baths for bathing,[18] which contributed to hygiene and good health according to the Church Father, Clement of Alexandria. The Didascalia Apostolorum, an early Christian manual, enjoined Christians to bathe themselves in those facilities that were separated by sex.[19] The Church also built public bathing facilities that were sex-segregated near monasteries and pilgrimage sites. The popes situated baths within church basilicas and monasteries since the early Middle Ages.[20] Pope Gregory the Great urged his followers on value of bathing as a bodily need.[21] Public bathhouse were common in medieval Christendom larger towns and cities such as Constantinople, Rome, Paris, Regensburg and Naples.[22]

Around the time of Tertullian, an early Church Father, it was customary for Christians to wash their hands (manulavium), face (capitilavium) and feet (pedilavium) before prayer, as well as before receiving Holy Communion.[23] The rite of footwashing employed a basin of water and linen towels, done in the imitation of Christ.[24] A major contribution of the Christian missionaries in Africa,[25] Asia and other places was better health care of the people through hygiene and introducing and distributing the soaps.[26]

In Hinduism

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Main article: Shaucha

In Hinduism, cleanliness is an important virtue. The Bhagavad Gita describes it as one of the divine qualities which one must practice. The Sanskrit word for cleanliness is śauca. The Bhagavad Gita repeats this word in five slokas at 13.8, 16.3, 16.7, 17.14 and 18.42. Śrīmad Bhāgavatam mentioned śauca at 1.16.26, 1.17.24 (as one of the four legs of Satya Yuga or Golden Age), 1.17.42, 3.28.4 (as spiritual practice), 3.31.33 (those who are addicted to sex life will not understand cleanliness), 4.29.84 (purity of ātman), 7.11.8–12 (one of the thirty qualities to be acquired), 7.11.21 (cleanliness as a characteristic of a Brahmin), 7.11.24 (cleanliness is a quality of the best worker), 11.3.24 (one should learn cleanliness to serve his or her guru), 11.17.16 (cleanliness is a natural quality of a Brahmin), 11.18.36 (cleanliness as a virtue among those who has realised God), 11.18.43 (quality to be practised by a householder), 11.21.14 (means of cleansing one body and mind), 11.19.36–39 (cleanliness means detachment from desire-prompted actions) 12.2.1 (effects of Kali Yuga on cleanliness).

Śrīmad Bhāgavatam also recognises cleanliness as one of the thirty qualities which one must acquire to obtain the grace of God[27] and identifies internal and external cleanliness among the twelve regular duties.[28] Cleanliness is also an exalted quality which characterises the Satya Yuga (Golden Age) in Hinduism.

Service of the Devas (gods), holy men, teachers, parents, and wise persons, as also the observance of cleanliness, uprightness, continence, and non-injury—these constitute austerities [tapa] pertaining to the body.

— Bhagavad Gita 17.14

Cleanliness or śauca is both internal and external. Hinduism extols not only external cleanliness but also internal cleanliness or purity. Since the minds of devotees (bhakta) are constantly absorbed in the all-pure lord, they become internally cleansed from the defects (kleśa) of lust, anger, greed, envy, ego, etc. In this state of mind, they naturally prefer to keep the external body and environment pure as well. Thus, in accordance with the old saying, "cleanliness is next to godliness", they are also externally pure.[29] Śrīmad Bhāgavatam explains the internal and external cleanliness as:

My dear Uddhava, general cleanliness, washing the hands, bathing, performing religious services at sunrise, noon and sunset, worshiping Me, visiting holy places, chanting japa, avoiding that which is untouchable, uneatable, or not to be discussed, and remembering My existence within all living entities as the Paramatman — these principles should be followed by all members of society through regulation of the mind, words and body.[30]

In Śrīmad Bhāgavatam 11.19.36–39, cleanliness is also defined as detachment from activities prompted by desire. Cleanliness, therefore, means to give up material attachment, not merely to frequently rinse one's skin with water.[31]

Hindus must bathe before entering temples in order to seek blessings, and temples often have tanks of water for this purpose. They also wash their feet before entering the temple. In some Orthodox Hindu households, taking a bath after visiting a funeral (antyeṣṭi) is required by Hindus who believe that a funeral is an inauspicious thing to witness, the inauspiciousness of which will follow those who do not purify themselves.[citation needed]

Hindus must visit the seven sacred rivers. Bathing in these rivers purifies the mind and increases their good merits. To invoke the presence of the holy rivers, the following mantra is chanted before the daily bath:[citation needed]

"AUM gaṇge ca yamune caiva godāvarī sarasvatī / narmade siṇdhu kāverī jalesmin saṃnidhim kuru."
[In this water, I invoke the presence of holy waters from the rivers Ganga, Yamuna, Godavari, Sarasvati, Narmada, Sindhu and Kaveri.]

Hindus clean their homes particularly well in preparing to celebrate Diwali each year as they believe that this brings good luck. Most Hindus also believe that keeping your house clean and great devotion are gestures to welcome the Goddess Lakshmi to their abode to stay. Some orthodox Hindus refrain from cleaning their houses on a Friday as it is a day dedicated to Goddess Lakshmi and cleaning homes on that day is considered inauspicious, so they clean their homes on other days. Tamil people also keep their homes clean in preparation for Diwali, Pongal, or Bhol.[citation needed]

In Islam

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Main article: Ritual purity in Islam

Islam stresses the importance of cleanliness and personal hygiene.[32] There are many verses in the Quran that discuss cleanliness. For example, "…Truly, Allah loves those who turn to Him constantly and He 'loves those who keep themselves pure and clean" (2:222). And, "…In mosque, there are men who love to be clean and pure. Allah loves those who make themselves clean and pure" (9:108).

The first lessons in Islamic catechisms are often matters of cleanliness, with subjects including: what is clean and what is not clean, what people need to be cleansed from, how they should clean, and what should they use to clean with. Muslims are required to perform ablution (wudu) with clean water before every prayer, and are recommended to stay in the state of ablution at all times. Abolution with dry materials (tayammum) may be used in exceptional circumstances, such as if clean water is unavailable. A ritual bath (ghusl) is performed on Fridays before the Friday Prayer (Juma). Ritual baths are recommended for spiritual purity, also after committing a sin, and are necessary for those who have watched a funeral. Special attention is given to cleaning homes before the arrival of guests or before feasts (Eid al-Fitr and Eid al-Adha), and holy days and nights.

Islamic hygienical jurisprudence, which dates to the 7th century, has elaborate rules. Taharah (ritual purity) involves performing wudu (ablution) for salah (five daily prayers), as well as regularly performing ghusl (bathing), which led to bathhouses being built across the Islamic world.[33] Islamic toilet hygiene also requires washing with water after using the toilet, for purity and to minimize germs.[34]

A basic form of the contagion/germ theory of disease found in the medieval Islamic world, was proposed by Persian physician Ibn Sina (also known as Avicenna) in The Canon of Medicine (1025). He mentioned that people can transmit disease to others by breath, noted contagion with tuberculosis, and discussed the transmission of disease through water and dirt.[35] The concept of invisible contagion was eventually widely accepted by Islamic scholars. In the Ayyubid Sultanate, they referred to such contagious substances as najasat ("impure substances"). The fiqh scholar Ibn al-Haj al-Abdari (c. 1250–133), while discussing Islamic diet and hygiene, gave advice and warnings about how contagion can contaminate water, food, and garments, and could spread through the water supply.[36]

See also

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See also the categories Cleaning tools and Cleaning products
  • Antiseptic – Antimicrobial substance or compound
  • Aseptic technique – Absence of disease-causing microorganisms
  • Cleaner – Person who cleans
  • Cleaning – Activity that removes dirt and other particles from people, animals and objects
  • Clean room – Dust-free room for research or production
  • Contamination control – Activities aiming to reduce contamination
  • Environmental remediation – Removal of pollution from soil, groundwater etc.
  • Green cleaning – cleaning methods and products with environmentally friendly ingredients and procedures which are designed to preserve human health and environmental quality
  • Hygiene – Practices performed to preserve health
  • Lady Macbeth effect
  • Pollution – Introduction of contaminants that cause adverse change
  • Ritual purification – Bathing or washing as a religious ritual
  • Waste management – Activities and actions required to manage waste from its source to its final disposal

References

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  1. ^ Hoy, Suellen (1995). Chasing Dirt: The American Pursuit of Cleanliness. Oxford University Press. p. 3. ISBN 0-19-511128-1.
  2. ^ Shove, Elizabeth (2003). Comfort, Cleanliness, and Convenience: The Social Organization of Normality. Berg. p. 80. ISBN 1-85973-630-0. ISSN 1472-2895.
  3. ^ Jacob Burckhardt, The Civilization of the Renaissance in Italy, as quoted by Blow, Douglas (2006). The Culture of Cleanliness in Renaissance Italy. Cornell University Press. p. 1.
  4. ^
    • Brown, Kathleen M. (2009). Foul Bodies: Cleanliness in Early America. Yale University Press. p. 327.
    • Young, Iris Marion (2003). "The Scaling of Bodies and the Politics of Identity". In Cahoone, Lawrence E. (ed.). From Modernism to Postmodernism: An Anthology (2nd ed.). Blackwell. p. 372. ISBN 978-0-631-23213-1.
    • Cook, Nancy (2007). Gender, Identity, and Imperialism: Women Development Workers in Pakistan. Macmillan. p. 141.
  5. ^ Chang, C.Y.; Kai, Francis (1994). GaAs High-Speed Devices: Physics, Technology, and Circuit Applications. John Wiley. p. 116. ISBN 0-471-85641-X.
  6. ^ "People Really do Wash Away Sins". Live Science. 7 September 2006.
  7. ^ "Cleanliness May Foster Morality". Live Science. 24 October 2009.
  8. ^ "Clean People Are Less Judgmental". Live Science. December 2008.
  9. ^ "Hand-Washing Wipes Away Buyer's Remorse". Live Science. 6 May 2010.
  10. ^ Riches, John K. (2000). The Bible: A Very Short Introduction. Oxford: Oxford University Press. ch. 1. ISBN 978-0192853431.
  11. ^ Portmann, John (2013). The Ethics of Sex and Alzheimer's. Taylor & Francis. pp. 13–18. ISBN 9781135122126.
  12. ^ Engler, Stausberg; Michael, Jackson (2016). The Oxford Handbook of the Study of Religion. Oxford: Oxford University Press. pp. 610–615. ISBN 9780198729570.
  13. ^ Clark, Mary E. (2006). Contemporary Biology: Concepts and Implications. University of Michigan Press. p. 613. ISBN 9780721625973. Douching is commonly practiced in Catholic countries. The bidet... is still commonly found in France and other Catholic countries.
  14. ^ Wahrman, Miryam Z. (2016). The Hand Book: Surviving in a Germ-Filled World. ForeEdge. pp. 46–48. ISBN 9781611689556. Water plays a role in other Christian rituals as well.... In the early days of Christianity, two to three centuries after Christ, the lavabo (Latin for "I wash myself"), a ritual handwashing vessel and bowl, was introduced as part of Church service.
  15. ^ Bulzacchelli, Richard H. (2006). Judged by the Law of Freedom: A History of the Faith-works Controversy, and a Resolution in the Thought of St. Thomas Aquinas. University Press of America. p. 19. ISBN 9780761835011. The Ethiopian and Coptic Churches distinguishes between clean and unclean meats, observes days of ritual purification, and keeps a kind of dual Sabbath on both Saturday and Sunday.
  16. ^ "The Liturgy of the Ethiopian Orthodox Tewahedo Church". eotc.faithweb.com. Archived from the original on 2011-06-12.
  17. ^ Rutherdale, Myra (2005). "Ordering the Bath". In Warsh, Cheryl Krasnick; Strong-Boag, Veronica (eds.). Children's Health Issues in Historical Perspective. Wilfrid Laurier Univ. Press. p. 315. ISBN 9780889209121. From Fleming's perspective, the transition to Christianity required a good dose of personal and public hygiene...
  18. ^ Rutherdale, Myra (2005). "Ordering the Bath". In Warsh, Cheryl Krasnick; Strong-Boag, Veronica (eds.). Children's Health Issues in Historical Perspective. Wilfrid Laurier Univ. Press. p. 315. ISBN 9780889209121. ...Thus bathing also was considered a part of good health practice. For example, Tertullian attended the baths and believed them hygienic. Clement of Alexandria, while condemning excesses, had given guidelines for Christian] who wished to attend the baths...
  19. ^ The Didascalia Apostolorum in English. Translated by Gibson, Margaret Dunlop. London: C.J. Clay and Sons. 1903. pp. 9–10.
  20. ^ Thurlkill, Mary (2016). Sacred Scents in Early Christianity and Islam: Studies in Body and Religion. Rowman & Littlefield. pp. 6–11. ISBN 978-0739174531. Clement of Alexandria (d. c. 215 CE) allowed that bathing contributed to good health and hygiene... Christian skeptics could not easily dissuade the baths' practical popularity, however; popes continued to build baths situated within church basilicas and monasteries throughout the early medieval period...
  21. ^ Squatriti, Paolo (2002). Water and Society in Early Medieval Italy, AD 400–1000, Parti 400–1000. Cambridge University Press. p. 54. ISBN 9780521522069. ...but baths were normally considered therapeutic until the days of Gregory the Great, who understood virtuous bathing to be bathing "on account of the needs of body"...
  22. ^
  23. ^ Ferguson, Everett (2013). Encyclopedia of Early Christianity (Second ed.). Routledge. p. 6. ISBN 978-1-136-61158-2.
  24. ^ Stutzman, Paul Fike (1 January 2011). Recovering the Love Feast: Broadening Our Eucharistic Celebrations. Wipf and Stock Publishers. ISBN 978-1-4982-7317-6.
  25. ^ Newell, Stephanie (2006). International Encyclopaedia of Tribal Religion: Christianity and tribal religions. Ohio University Press. p. 40. ISBN 9780821417096.
  26. ^
    • Channa, Subhadra (2009). The Forger's Tale: The Search for Odeziaku. Indiana University Press. p. 284. ISBN 9788177550504. A major contribution of the Christian missionaries was better health care of the people through hygiene. Soap, tooth–powder and brushes came to be used increasingly in urban areas.
    • Thomas, John (2015). Evangelising the Nation: Religion and the Formation of Naga Political Identity. Routledge. p. 284. ISBN 9781317413981. cleanliness and hygiene became an important marker of being identified as a Christian
  27. ^ Śrīmad Bhāgavatam 7.11.8–12
  28. ^ Śrīmad Bhāgavatam 11.19.33–35
  29. ^ Mukundananda, Swami. "Chapter 12, Verse 16 – Bhagavad Gita, The Song of God – Swami Mukundananda". www.holy-bhagavad-gita.org.
  30. ^ Śrīmad Bhāgavatam 11.17.34–35
  31. ^ "Srimad Bhagavatam Canto 11 Chapter 19 Verses 36-39". innerschool.org.
  32. ^ Majeed, Azeem (22 December 2005). "How Islam changed medicine". BMJ. 331 (7531): 1486–1487. doi:10.1136/bmj.331.7531.1486. ISSN 0959-8138. PMC 1322233. PMID 16373721.
  33. ^ "Ṭahāra | Islam". Encyclopedia Britannica.
  34. ^ Israr Hasan (2006). Muslims in America. AuthorHouse. p. 144. ISBN 978-1-4259-4243-4.
  35. ^ Byrne, Joseph Patrick (2012). Encyclopedia of the Black Death. ABC-CLIO. p. 29. ISBN 9781598842531.
  36. ^ Reid, Megan H. (2013). Law and Piety in Medieval Islam. Cambridge University Press. pp. 106, 114, 189–190. ISBN 9781107067110.
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