The Book of Manumission of Slaves

Amr ibn Abasah, said that Marrah ibn Ka'b said:I heard the Messenger of Allah (ﷺ) say: If anyone emancipates a Muslim slave, that will be his ransom from Jahannam

The tradition mentioned above has also been transmitted by Mu'adh through a different chain of narrators. After mentioning the words "If any Muslim emancipates a Muslim slave... and if a woman emancipates a Muslim woman,...

Narrated AbudDarda': The Prophet (ﷺ) said: the similitude of a man who emancipates a slave at the time of his death is like that of a man who gives a present after satisfying his appetite