Sahih al-Bukhari, Volume 7, Book 67, Hadith 448 (USC-MSA) ⓘ

Narrated Maimuna: The Prophet was asked about a mouse that had fallen into butter-fat (and died). He said, "Throw away the mouse and the portion of butter-fat around it, and eat the rest."

حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، عَنْ مَيْمُونَةَ ـ رضى الله عنهم ـ قَالَتْ سُئِلَ النَّبِيُّ صلى الله عليه وسلم عَنْ فَأْرَةٍ سَقَطَتْ فِي سَمْنٍ فَقَالَ ‏ "‏ أَلْقُوهَا وَمَا حَوْلَهَا وَكُلُوهُ ‏" ‏‏.‏