Hadith 1392
Sayyida Maymunah (may Allah be pleased with her) narrates: The Prophet Muhammad (peace be upon him) was asked about a mouse that dies in clarified butter (ghee). The Prophet (peace be upon him) said: If the ghee was solid, then throw away the mouse and the ghee around it, and eat the remaining ghee. But if the ghee was melted, then do not use it.