"We went out with the Messenger of Allah on the campaign of Tabuk, and there was a friend of ours with us, who fought with a man from among the Muslims. The man bit him on the forearm, so he pulled it away from his mouth and a tooth fell out. The man came to the Prophet, seeking blood money, but his brother and bite him like a stallion bites, then come and demand blood money? There is no blood money for that." And the Messenger of Allah juddgedit to be invalid.
Sunan an-Nasa'i Book 45, Hadith 60
← Previous Hadith 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.

Sunan an-Nasa'i Book 45, Hadith 59 Next Hadith → a man bit the hand of another man and his front tooth fell out. He came to the Prophet but he considered it in vain.

Sunan an-Nasa'i Book 45, Hadith 61