وعن ابن مسعود رضي الله عنه
قال: دخلت على النبي صلى الله عليه وسلم وهو يوعك فقلت: يارسول الله إنك توعك وعكاً شديداً قال: «أجل إني أوعك كما يوعك رجلان منكم«قلت: ذلك أن لك أجرين؟ قال: «أجل ذلك كذلك ما من مسلم يصيبه أذى؛ شوكة فما فوقها إلا كفر الله بها سيئاته، وحطت عنه ذنوبه كما تحط الشجرة ورقها»
I visited the Prophet (sallallahu alayhi wa sallam) when he was suffering fever. I said, “You seem to be suffering greatly, O Messenger of Allah.” The Prophet (sallallahu alayhi wa sallam) replied, “Yes, I suffer as much as two persons.”
I said, “Is that because you have a double reward?” He replied that that was so and then said, “No Muslim is afflicted by a harm, be it the pricking of a thorn or something more (painful than that), but Allah thereby causes his sins to fall away just as a tree sheds its leaves”.