The Book of the Believer · Hadith 120 (#Ḥadīth #14)
Chapter 5 | The Reward of Helping a Believer, Relieving Him of Distress And Showing Him Kindness
120 - وعن أبي جعفر عليه السلام قال: من قضى لأخيه المؤمن حاجة كتب الله بها عشر حسنات، ومحى عنه عشر سيئات، ورفع له بها عشر درجات، و كان عدل عشر رقاب وصوم شهر واعتكافه في المسجد الحرام
120. It has been reported that Abu Ja'far said: One who fulfils a need for his Muslim brother, Allah records for him ten good deeds and erases from him ten misdeeds and elevates him ten degrees and it is equal to freeing ten slaves and fasting and i'tikaf in the Sacred Mosque for one month.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).