Hadith: I visited the Prophet (may Allah's peace and blessings be upon him) while he was in pain because of fever, so I touched him

عَنْ عَبْدُ اللَّهِ بْنُ مَسْعُودٍ رضي الله عنه:

دَخَلْتُ عَلَى رَسُولِ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ وَهُوَ يُوعَكُ وَعْكًا شَدِيدًا، فَمَسِسْتُهُ بِيَدِي، فَقُلْتُ: يَا رَسُولَ اللَّهِ، إِنَّكَ لَتُوعَكُ وَعْكًا شَدِيدًا؟ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ: «أَجَلْ، إِنِّي أُوعَكُ كَمَا يُوعَكُ رَجُلاَنِ مِنْكُمْ» فَقُلْتُ: ذَلِكَ أَنَّ لَكَ أَجْرَيْنِ؟ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ: «أَجَلْ» ثُمَّ قَالَ رَسُولُ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ: «مَا مِنْ مُسْلِمٍ يُصِيبُهُ أَذًى، مَرَضٌ فَمَا سِوَاهُ، إِلَّا حَطَّ اللَّهُ لَهُ سَيِّئَاتِهِ، كَمَا تَحُطُّ الشَّجَرَةُ وَرَقَهَا».
[صحيح] - [متفق عليه]

Ibn Mas‘ūd (may Allah be pleased with him) reported: I visited the Prophet (may Allah's peace and blessings be upon him) while he was in pain because of fever, so I touched him and said: "You are in great pain from raging fever." He said: "Indeed, the pain I feel from fever is like the pain that two men from among you might get."
Sahih/Authentic. - [Al-Bukhari and Muslim]

Explanation

Ibn Mas‘ūd (may Allah be pleased with him) recalls that he visited the Prophet (may Allah's peace and blessings be upon him) while he was in pain from acute sickness. He stretched out his hand and said: "O Messenger of Allah, you are severely sick." The Prophet (may Allah's peace and blessings be upon him) informed him that his sickness is as severe as the sickness of two men among them so that he would achieve the highest degree of patience.