The Prophet (ﷺ) was asked about cleansing (after relieving oneself). He said: (One should cleanse oneself) with three stones which should be free from dung.
Abu Dawud said: A similar tradition has been narrated by Abu Usamah and Ibn Numair from Hisham.
Reference: Sunan Abi Dawud 41 In-book : Book 1, Hadith 41 English translation : Book 1, Hadith 41
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