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: 4134
Anas b. Malik reported: There came to Allah's Messenger (may peace be upon him) eight persons from the tribe of 'Ukl, but with this addition that he did not cauterise (the wounds which hid been inflicted upon them while punishing them).