"Ya'la fought with a man, and one of them bit the other, who pulled his hand away from his mouth, and a front tooth fell out. They referred their dispute to the Messenger of Allah and he said: 'Would one of you bite his brother as a stallion bites? There is no Diyah for that." (Using translation from Nasāʾī 4760)
قَاتَلَ يَعْلَى رَجُلًا فَعَضَّ أَحَدُهُمَا صَاحِبَهُ فَانْتَزَعَ يَدَهُ مِنْ فِيهِ فَنَزَعَ ثَنِيَّتُهُ فَاخْتَصَمَا إِلَى رَسُولِ اللهِ ﷺ فَقَالَ «يَعَضُّ أَحَدُكُمْ أَخَاهُ كَمَا يَعَضُّ الْفَحْلُ لَا دِيَةَ لَهُ» اللَّفْظُ لِابْنِ بَشَّارٍ