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Probably need a newer source than this for such an important topic, but apparently among Zoroastrians cow's urine went from being a preventative/cure against leprosy to being a common daily ablution to avoid disease and evil spirits until the early 20th century. In lieu of cow's urine, apparently goat or human urine was used as a less effective substitute. —  LlywelynII 09:04, 11 April 2022 (UTC) reply