Sufyan bin 'Uyaynah سفيان بن عيينة · The Chapters on Manumission (of Slaves)

the warrior in the path of Allah, the mukatab seeking to fulfill (his manumission debt), and the one getting married seeking chastity."

I said to Ka'b bin Murrah, tell us a Hadith from the Messenger of Allah (ﷺ), but be careful. He said: I heard the Messenger of Allah (ﷺ) say: “Whoever frees a Muslim man, he will be his ransom from the Fire; each of his bones will suffice (as a ransom) for each of his bones. Whoever frees two Muslim women, they will be his ransom from the Fire; each of their two bones will suffice (as a ransom) for…

“I said: 'O Messenger of Allah (ﷺ), which slave is best?' He said: ‘The one who is most precious to his master and most valuable in price.' ”

“Whoever becomes the master of a Mahram relative (with whom marriage is not lawful), he becomes free.”