[Machine] I entered upon the Messenger of Allah ﷺ while he was having a bad cold, so I placed my hand on him and said, "O Messenger of Allah, indeed you have a severe cold." He replied, "Indeed, I have a cold just like two of you have." I said, "Is that because you will have double the reward?" He said, "Yes, for no Muslim is afflicted with any harm, whether it be an illness or something else, except that his sins are expiated as leaves fall from a tree."  

دَخَلْتُ عَلَى رَسُولِ اللَّهِ ﷺ وَهُوَ يُوعَكُ فَوَضَعْتُ يَدِي عَلَيْهِ فَقُلْتُ يَا رَسُولَ اللَّهِ إِنَّكَ لَتُوعَكُ وَعْكًا شَدِيدًا فَقَالَ «إِنِّي أُوعَكُ كَمَا يُوعَكُ رَجُلَانِ مِنْكُمْ» قَالَ قُلْتُ ذَلِكَ بِأَنَّ لَكَ أَجْرَيْنِ؟ قَالَ «أَجَلْ وَمَا مِنْ مُسْلِمٍ يُصِيبُهُ أَذًى مَرَضٌ فَمَا سِوَاهُ إِلَّا حُطَّ عَنْهُ مِنْ سَيِّئَاتِهِ كَمَا تَحُطُّ الشَّجَرَةُ وَرَقَهَا»