Kitāb al-Muʾmin

Hadith 127
brotherhood
127- وعن أبي عبد الله عليه السلام قال: من أحب الأعمال إلى الله عزو جل إدخال السرور على أخيه المؤمن [من] إشباع جوعته، أو تنفيس كربته أو قضاء دينه
127. It has been reported that Abu 'Abd Allah (a.s) said: Amongst the deeds most loved by Allah are (for a person) to bring joy to his fellow believer by satiating his hunger, relieving his distress or paying off his debt.
Source: Ḥusayn b. Saʿīd al-Ahwāzī