The Prophet (ﷺ) said, "No fatigue, no disease, nor sorrow, nor sadness, nor hurt, nor distress befalls a Muslim, even if it were the prick he receives from a thorn, but that Allâh expiates some of his sins for that ". [7:545-O.B]

Allâh's Messenger (ﷺ) said, "The example of a believer is that of a fresh tender plant; from whatever direction the wind comes, it bends it, but when the wind becomes quiet, it becomes straight again. Similarly, a believer is afflicted with calamities (but he remains patient till Allâh removes his difficulties.) And Al-Fajir (an impious wicked evil-doer) is like a pine tree which keeps hard and straight till Allâh cuts (breaks) it down when He wishes." [7:547-0.B]

Allâh's Messenger (ﷺ) said, "If Allah wants to do good to somebody, He afflicts him with trials." [7:548-0.B]

I never saw anybody suffering so severely from sickness as Allâh's Messenger (ﷺ). [7:549-O.B]

I visited the Prophet (ﷺ) during his ailments and he was suffering from a high fever. I said, "You have a high fever. Is it because you will have a double reward for it?" He said, "Yes, for no Muslim is afflicted with any harm but for that Allâh will remove his sins as the leaves of a tree fall down." [7:550-O.B]

that he said to some (one) of his companions, "Shall I show you a woman of the people of Paradise? The companion said, "Yes." He said, This black lady came to the Prophet (ﷺ) and said, 'I get attacks of epilepsy and my body becomes uncovered; please invoke Allâh for me. ' The Prophet (ﷺ) said (to her), 'If you wish, be patient and you will have (enter) Paradise; and if you wish, I will invoke Allâh to cure you. ' She said, I will remain patient, and added, but I become uncovered, so please invoke Allâh for me that I may not become uncovered. ' So he invoked Allâh for her. [7:555-0.B]

I heard Allâh's Messenger (ﷺ) saying, Allâh said, 'If I deprive my slave of his two beloved things (i.e., his eyes) and he remains patient, I will let him enter Paradise in compensation for them." [7:557-O.B]