A man bit another man's hand and the latter pulled his hand out of his mouth by force, causing two of his incisors (teeth) to fall out. They submitted their case to the Prophet, who said, "One of you bit his brother as a male camel bites. (Go away), there is no Diya (Blood-money) for you."  

أَنَّ رَجُلاً عَضَّ يَدَ رَجُلٍ فَنَزَعَ يَدَهُ مِنْ فَمِهِ فَوَقَعَتْ ثَنِيَّتَاهُ فَاخْتَصَمُوا إِلَى النَّبِيِّ ﷺ فَقَالَ يَعَضُّ أَحَدُكُمْ أَخَاهُ كَمَا يَعَضُّ الْفَحْلُ لاَ دِيَةَ لَكَ  

I went out in one of the Ghazwa and a man bit another man and as a result, an incisor tooth of the former was pulled out. The Prophet ﷺ cancelled the case.  

خَرَجْتُ فِي غَزْوَةٍ فَعَضَّ رَجُلٌ فَانْتَزَعَ ثَنِيَّتَهُ فَأَبْطَلَهَا النَّبِيُّ ﷺ