It was narrated from Ibn' Abbas, from Maimunah, that:

the Prophet was asked about a mouse that had fallen into some solid cooking fat. He said. "Take it, and whatever is around it, and throw it away."

أَخْبَرَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ الدَّوْرَقِيُّ، وَمُحَمَّدُ بْنُ يَحْيَى بْنِ عَبْدِ اللَّهِ النَّيْسَابُورِيُّ، عَنْ عَبْدِ الرَّحْمَنِ، عَنْ مَالِكٍ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، عَنْ مَيْمُونَةَ، أَنَّ النَّبِيَّ ﷺ سُئِلَ عَنْ فَأْرَةٍ وَقَعَتْ فِي سَمْنٍ جَامِدٍ فَقَالَ " خُذُوهَا وَمَا حَوْلَهَا فَأَلْقُوهُ " .