Narrated from Sayyiduna Abu Mas’ud Uqbah bin ‘Amr (may Allah be pleased with him): I was beating my slave when suddenly I heard a voice from behind me:“Abu Mas’ud! Know that Allah has more power over you than you have over him.”I turned around and saw that it was the Messenger of Allah (peace and blessings be upon him). I said: O Messenger of Allah! I set him free for the sake of Allah. The Prophet (peace and blessings be upon him) said:“If you had not done so, the fire of Hell would certainly have touched you.”Or he said:“The fire would certainly have engulfed you.”