It is narrated from Sayyiduna Samurah bin Jundub (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever kills his slave, we will kill him in retribution, and whoever cuts off his (the slave's) nose, we will cut off his nose." The narrator said: Then Hasan (may Allah have mercy on him) forgot this hadith and used to say: A free man will not be killed in retaliation for a slave.