Sahih Muslim
The Book Pertaining to the Oath, for Establishing the Responsibility of Murders, Fighting, Requital and Blood-Wit (Kitab Al-Kitab Al-Qasama wal-Muharaba wal-Qisas wal-Diyat)
Book Number: 016 / Hadith Number: 4145
'Imran b. Husain reported that a person bit the arm of another person; he pulled it out and his foretooth fell down. This matter was taken to Allah's Apostle (may peace be upon him), and he turned it down saying: Did you want to eat his flesh?