Kitāb al-Muʾmin

Hadith 170
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170 - وعن أبي جعفر عليه السلام أنه قال: إطعام مسلم يعدل عتق نسمة.
170. It has been narrated that Abu Ja'far (a.s) said: Feeding a Muslim is equal to freeing a human being.
Source: Ḥusayn b. Saʿīd al-Ahwāzī