Sahih al-Bukhari · Hadith 1848

وَعَضَّ رَجُلٌ يَدَ رَجُلٍ ـ يَعْنِي فَانْتَزَعَ ثَنِيَّتَهُ ـ فَأَبْطَلَهُ النَّبِيُّ صلى الله عليه وسلم‏.‏

A man bit the hand of another man but in that process the latter broke one incisor tooth of the former, and the Prophet (ﷺ) forgave the latter