Waliuddin Abu Abdullah Mahmud Tabrizi

“ OF SLAVES
It is related from Abú Hurairah that, 'The Apostle of God said, "Whoever emancipates a Muslim slave, God will emancipate every member of his body from the fire, in return for the members (of his slave) ."'—Muslim, Al Bukhárí.
It is related from ʿAmru bin ʿAbasah that, 'The Prophet said, "Whoever builds a mosque in order that God may be remembered therein; a house will be built for him in paradise. And whoever emancipates a person who is a Muslim, it will be his ransom from hell. ”

“ It is related from Jábir that he said, 'We used to sell the mothers of children in the time of the Apostle of God and in that of Abú Bakr; but when ʿOmar (was Khalíf) he forbade us doing it; therefore we brought the practice to an end.'— Abú Dáud. ”