We sold slave-mothers during the time of the Messenger of Allah (ﷺ) and of AbuBakr. When Umar was in power, he forbade us and we stopped.

The tradition mentioned above has also been transmitted by Abu Qilabah through a different chain of narrators on the authority of 'Imran b. Husain to the same effect. But in this version he did not mention "He spoke severely of them."

Al-Arif ibn ad-Daylami said: We went to Wathilah ibn al-Asqa and said to him: Tell us a tradition which has not addition or omission. He became angry and replied: One of you recites when his copy of a Qur'an is hung up in his house, and he makes additions and omissions. We said: All we mean is a tradition you have heard from the Messenger of Allah (ﷺ). He said: We went to the Prophet (ﷺ) about a friend of ours who deserved. Hell for murder. He said: Emancipate a slave on his behalf; Allah will set free from Hell a member of the body for every member of his.

I heard the Messenger of Allah (ﷺ) say: If anyone emancipates a Muslim slave, that will be his ransom from Jahannam.