he fought a man and one of them bit the other, who pulled his forearm away from his mouth, and a front tooth fell out. The matter was referred to the Prophet and he said: "Would one of you bite his brother as a young camel bites?" And judged it to be invalid.  

أَنَّهُ قَاتَلَ رَجُلاً فَعَضَّ أَحَدُهُمَا صَاحِبَهُ فَانْتَزَعَ يَدَهُ مِنْ فِيهِ فَقَلَعَ ثَنِيَّتَهُ فَرُفِعَ ذَلِكَ إِلَى النَّبِيِّ ﷺ فَقَالَ يَعَضُّ أَحَدُكُمْ أَخَاهُ كَمَا يَعَضُّ الْبَكْرُ فَأَبْطَلَهَا  

a man from Banu Tamim fought with another man, and he bit his hand, so he pulled it away and a front tooth fell out. They referred the dispute to the Messenger of Allah, who said: "Would one of you bite his brother as a young camel bites?" and he thwarted it, meaning he judged it to be invalid.  

أَنَّ رَجُلاً مِنْ بَنِي تَمِيمٍ قَاتَلَ رَجُلاً فَعَضَّ يَدَهُ فَانْتَزَعَهَا فَأَلْقَى ثَنِيَّتَهُ فَاخْتَصَمَا إِلَى رَسُولِ اللَّهِ ﷺ فَقَالَ يَعَضُّ أَحَدُكُمْ أَخَاهُ كَمَا يَعَضُّ الْبَكْرُ فَأَطَلَّهَا أَىْ أَبْطَلَهَا