Volume 8 · Book 82 · Hadith 795
Narrated Anas: The Prophet cut off the hands and feet of the men belonging to the tribe of 'Uraina and did not cauterise (their bleeding limbs) till they died.
— Sahih Bukhari, Volume 8, Book 82: Punishment of Disbelievers at War with Allah and His Apostle, Hadith #795