سنن النسائي

It was narrated from Safwan bin Ya'la bin Munyah that: a hired man of Ya'la bin Munyah was bitten by another on his forearm and he pulled it away from his mouth. The matter was referred to the Prophet, as his front tooth had fallen out, but the Messenger of Allah (ﷺ) considered it an invalid claim, and said: "No,; should he put (his forearm) in your mouth for you to bite it as a stallion bites?"