Hadith 8:177
‘Abdallah b. Yazid said that the Prophet forbade spoliation and mutilation . Bukhari transmitted it. 1. Either taking some of the spoil in battle before the division of the booty has been made, or appropriating anything belonging to a Muslim. 2. The reference here may simply be to cutting off certain parts of animals, but it can apply to human beings as well.
وَعَن عبد الله بن يزِيد عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: أَنَّهُ نهى عَن النهبة والمثلة. رَوَاهُ البُخَارِيّ
Original Reference: Mishkat al-Masabih 2941