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 deen (strength of their religion). If his deen is firm (strong) his affliction is hard, and if his deen is weak, his affliction is light. Indeed, one would be so much subjected to adversity until he walks among the people without any sins.

- Hadith of Tirmizee and Ahmad