The Book of the Believer · Hadith 53 (#Ḥadīth #3)
Chapter 2 | The Exclusive Honors that Allah has Reserved for the Believers
53 - وعن أبي عبد الله (ع) قال: إذا أحسن العبدُ المؤمن ضاعف الله له عملَه لكل عمل سبعمائة ضعف وذلك قول الله (جل جلاله) ﴿مثَل الَّذِين ينفقُونَ اموالَهم في سبِيل الله كمثَل حبة انبتَت سبع سنَابِل فى كل سنبلَة مىةُ حبة والله يضاعف لمن يشَاء والله .﴾ واسع عليم
53. It has been reported that Abu 'Abd Allah said: When a believing servant does good, Allah multiplies for him his deed - for every deed seven hundred times; and that is the meaning of Allah's words: And Allah multiplies for whom He pleases. [Holy Quran 2/261]
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).