"Allah has made some of your brothers as slaves under your care. So whoever has his brother under his care, then let him feed him from his food, and let him clothe him from his clothes. And do not give him a duty that he cannot bear, and if you give him a duty he cannot bear, then assist him with it."
"If somebody slanders his slave (by accusing him of committing illegal sexual intercourse) and the slave is innocent from what he says, Allah will impose the punishment upon him on the Day of Resurrection, unless it is as he said about him."
"I was beating a slave of mine and I heard someone behind me saying: 'Beware O Abu Mas'ud! Beware O Abu Mas'ud!' So I turned around and saw that it was the Messenger of Allah. He said: 'Allah has more power over you than you do over him." Abu Mas'ud said: "I have not beaten any slave of mine since then."
"A man came to the Prophet and said: 'O Messenger of Allah! How many times should the servant be pardoned?' The Prophet was silent. Then he said: 'O Messenger of Allah! How many times should the servant be pardoned?' He said: ' Seventy times each day.'"