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.
Reference: Sunan an-Nasa'i 4764 In-book : Book 45, Hadith 59 English translation : Vol. 5, Book 45, Hadith 4768
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