Narrated Abu Hurairah:
"When the following was revealed: 'Whoever works evil will have the recompense of it... (4:123)' That worried the Muslims, so they complained about that to the Messenger of Allah (ﷺ) and he said: "Seek closeness and be steadfast, and in all that afflicts the believer there is atonement, even a thorn that pricks him, and the hardship he suffers." (ES)
English reference (ES): Vol. 5, Book 44, Hadith 3038 (ES)
Arabic reference (ES): Book 47, Hadith 3312 (ES)