Abu Dawud
Purification (Kitab Al-Taharah)
Book Number: 001 / Hadith Number: 72
Narated By N/A : A similar tradition has been transmitted Abu Huriarah through a different chain of narrators. But this version has been narrated as a statement of Abu Hurairah himself and not attributed to the Prophet (pbuh). The version has the addition of the words: "If the cat licks (a utensil), it should be washed once."