Jubayr ibn Mut’im reported: The Messenger of Allaah, صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ, said, “Verily, Allaah Almighty will put His servant to trial by illness until his every sin is expiated.” [Source: al-Mu’jam al-Kabeer 1548]