Sa`d رضي الله عنه narrated that the Prophet صلى الله عليه وسلم said:

“The most in their suffering among the people are the prophets, then the best, then the (next) best. One is afflicted in accordance with his faith. If his faith is firm, his affliction is hard, and if his faith is weak, his affliction is light. Indeed, one would be so much subjected to adversity until he walks among the people without any sins.”

Ahmad and At-Tirmidhi