[Machine] I entered upon the Prophet ﷺ while he was suffering from an illness. I touched him and said, "O Messenger of Allah, indeed you are suffering from a severe illness." He said, "Indeed, I do suffer from illness, just as two of you suffer." I said, "Is it because you will receive two rewards?" He said, "Yes, by the One in whose hand is my soul, there is no Muslim on the earth who is afflicted with any harm or illness except that Allah removes his sins as leaves fall from a tree."  

دَخَلْتُ عَلَى النَّبِيِّ ﷺ وَهُوَ يُوعَكُ فَمَسِسْتُهُ فَقُلْتُ يَا رَسُولَ اللهِ إِنَّكَ تُوعَكُ وَعْكًا شَدِيدًا قَالَ أَجَلْ إِنِّي أُوعَكُ كَمَا يُوعَكُ رَجُلَانِ مِنْكُمْ قَالَ قُلْتُ لِأَنَّ لَكَ أَجْرَيْنِ؟ قَالَ نَعَمْ وَالَّذِي نَفْسِي بِيَدِهِ مَا عَلَى الْأَرْضِ مِنْ مُسْلِمٍ يُصِيبُهُ أَذَى مَرَضٍ فَمَا سِوَاهُ إِلَّا حَطَّ اللهُ عَنْهُ خَطَايَاهُ كَمَا تَحُطُّ الشَّجَرَةُ وَرَقَهَا