It is narrated from Sayyiduna Imran bin Husayn (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "A man fought with another man, and he bit his hand; he pulled his hand away and the other's front tooth fell out. So he brought his dispute against him to the Prophet (peace and blessings be upon him). He (peace and blessings be upon him) said: 'Should he have left his hand in your mouth so that you could keep biting it as a stallion camel bites?'" So the Prophet (peace and blessings be upon him) declared (the loss of) that tooth to carry no compensation.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15535