Sahih Muslim Book 45, Hadith 57

I visited Allah's Messenger (ﷺ) as he was running a high temperature. I touched his body with my hand and said to him: Allah's Messenger, you are running a high temperature, whereupon Allah's Messenger (ﷺ) said: Yes, it is so. I comparatively have a more severe fever than any one of you. I said: Is it because there is a double reward in store for you? Thereupon Allah's Messenger (ﷺ) said: Yes, it is so. And Allah's Messenger (ﷺ) again said: When a Muslim falls ill, his compensation is that his minor sins are obliterated just as leaves fall (in autumn). In the hadith transmitted on the authority of Zubair there is (no mention of these words):" I touched his body with my hands."

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This hadith has been narrated on the authority of A'mash through other chains of transmitters.

Sahih Muslim Book 45, Hadith 56
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He said: Yes, by Him in Whose Hand is my life, there is no Muslim upon the earth." The rest of the hadith is the same.

Sahih Muslim Book 45, Hadith 58