Never a believer is stricken with discomfort, hardship or illness, grief or even with mental worry that his sins are not expiated for him.
Sahih Muslim Book 45, Hadith 66
← Previous Hadith I heard Allah's Messenger (ﷺ) as saying: There is nothing (in the form of trouble) that comes to a believer even if it is the pricking of a thorn that there is decreed for him by Allah good or his sins are obliterated.

Sahih Muslim Book 45, Hadith 65 Next Hadith → "Whoever does evil will be requited for it", and when this was conveyed to the Muslims they were greatly perturbed. Thereupon Allah's Messenger (ﷺ) said: Be moderate and stand firm in trouble that falls to the lot of a Muslim (as that) is an expiation for him; even stumbling on the path or the pricking of a thorn (are an expiation for him). Muslim said that 'Umar b. Abd al-Rahman Muhaisin was from amongst the people of Mecca.

Sahih Muslim Book 45, Hadith 67