It is narrated from Sayyiduna ‘Uwain bin Sa‘idah Ansari (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) went to those people in the Mosque of Quba and said:“Indeed, Allah Almighty has mentioned your mosque and praised you well regarding purity, so what is this cleanliness that you adopt?”They said:“By Allah! O Messenger of Allah! There is nothing in our knowledge regarding this matter, except that the Jews were our neighbors and they used to wash their backsides after relieving themselves, so we also started washing that part like them.”