Sahih Bukhari
Sahih Bukhari Volume 001, Book 004, Hadith Number 236.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 04. Ablutions (Wudu')
Narated By Maimuna : Allah's Apostle was asked regarding ghee (cooking butter) in which a mouse had fallen. He said, "Take out the mouse and throw away the ghee around it and use the rest."