«وَالَّذِي نَفْسِي بِيَدِهِ مَا يُصِيبُ الْمُؤْمِنَ مِنْ نَصَبٍ وَلَا وَصَبٍ وَلَا هَمَ وَلَا حَزَنٍ إِلَّا كَفَّرَ اللهُ عَنْهُ بِهَا مِنْ خَطَايَاهُ، حَتْى الشَّوْكَةِ يُشَاكُهَا»
(By the One in Whose Hand is my soul, no believer is stricken with fatigue, exhaustion, worry or grief, but Allah will forgive him for some of his sins thereby -- even a thorn which pricks him.) Imam Ahmad recorded that Mu`awiyah bin Abi Sufyan, may Allah be pleased with him, said, â€I heard the Messenger of Allah say: