Amr ibn Abasah, said that Marrah ibn Kab said: I heard the Messenger of Allah ﷺ say: If anyone emancipates a Muslim slave, that will be his ransom from Jahannam.
Hadith ReferenceSunan Abi Dawud / The Book of Manumission of Slaves (Kitab Al-Itaq) / Hadith: 3966
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:حسن, ورواه حريز بن عثمان عن سليم بن عامر انظر مسند أحمد (4/386) وللحديث شواھد كثيرة