The Book of the Believer · Hadith 52 (#Ḥadīth #2)
Chapter 2 | The Exclusive Honors that Allah has Reserved for the Believers
52 - عن يعقوب بن شعيب قال: سمعته يقول ليس لأحدٍ على الله ثواب على عمل إلا للمؤمنين
52. Ya'qub ibn Shu'aib reports: I heard him (Abu 'Abd Allah saying: Allah has not taken it on Himself to reward anyone for good deeds except the believers.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).