Musannaf Ibn Abi Shaybah

Hazrat Safwan bin Ya'la (may Allah be pleased with him), son of Umayyah, narrates that his father, Hazrat Ya'la (may Allah be pleased with him), son of Umayyah, said: I had a servant who got into a fight with someone. Then one of them bit the hand of the other. Hazrat Ata said: Hazrat Safwan informed me that one of them bit the hand of the other, so the person whose hand was being bitten pulled his hand out of the mouth of the one biting, and one of his teeth broke. Then both of them came to the service of the Holy Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) declared the claim for the tooth invalid.