Abu Hurairah narrated that the Prophet(S.A.W) visited a man who was ill, so he said:
"Cheer up, for indeed Allah said: 'It is My Fire which I impose upon My sinning slave as his portion of the Fire." (Hasan)Al-Hasan said:"They would hope that the fever that occurred at night would atone for any deficiency caused by sins." (FR)
English reference (FR): Vol. 4, Book 2, Hadith 2088 (FR)
Arabic reference (FR): Book 28, Hadith 2232 (FR)