Musannaf Ibn Abi Shaybah 11111 — Reports on the reward for fever

Sayyiduna Abdullah (bin Mas'ud) (may Allah be pleased with him) said: I went in to the Prophet (peace and blessings be upon him) while he had a fever. I touched him and said: "O Messenger of Allah, you have a very severe fever." He said: "Yes, I suffer fever as two men among you suffer it." I said: "That is because you have the reward twice." He said: "Yes. By the One in whose Hand is my soul, there is no Muslim on the earth who is afflicted by any harm, whatever it may be, except that Allah removes his sins from him because of it, just as a tree sheds its leaves."