The Prophet ﷺ was asked regarding ghee in which a mouse had fallen. He said, "Take out the mouse and throw away the ghee around it (and use the rest.)"
أَنَّ النَّبِيَّ ﷺ سُئِلَ عَنْ فَأْرَةٍ سَقَطَتْ فِي سَمْنٍ فَقَالَ خُذُوهَا وَمَا حَوْلَهَا فَاطْرَحُوهُ قَالَ مَعْنٌ حَدَّثَنَا مَالِكٌ مَا لاَ أُحْصِيهِ يَقُولُ عَنِ ابْنِ عَبَّاسٍ عَنْ مَيْمُونَةَ