'Ali (RAA) narrated that the Messenger of Allah (ﷺ) said:
"Inflict the prescribed punishment to those whom you possess (i.e. your slaves)." Related by Abu Dawud and Muslim (but only traced to the Companion). (JA)
English reference (JA): Book 10, Hadith 1250 (JA)
Arabic reference (JA): Book 10, Hadith 1211 (JA)