The Book Pertaining to the Oath, for Establishing the Responsibility of Murders, Fighting, Requital and Blood-Wit (Kitab Al-Kitab Al-Qasama wa'l-Muharaba wa'l-Qisas wa'l-Diyat)
Muslim :: Book 16 : Hadith 4143
Imran b. Husain reported: Ya'la b. Munya or Ibn Umayya fought with a person, and the one bit the hand of the other. And he tried to draw his hand from his mouth and thus his foreteeth ware pulled out. They referred their dispute to Allah's Apostle (may peace be upon him), whereupon he said: Does any one of you bite as the camel bites? So there is no blood-wit for it.