Samurah (RAA) narrated that The Messenger of Allah (ﷺ) said:
"Whoever kills his slave we shall kill him, and whoever cuts the nose of his slave we shall cut off his nose." Related by Ahmad and the four lmams. At-Tirmidhi graded it as Hasan. Abu Dawud and An-Nasa'i added the following, "and whoever castrates his slave we shall castrate him." Al-Hakim graded this addition as Sahih. (DE)
English reference (DE): Book 9, Hadith 1202 (DE)
Arabic reference (DE): Book 9, Hadith 1172 (DE)