Chapter 97: Oneness, Uniqueness of Allah (Tawheed)
Narrated Ibn 'Abbas: Allah' s Messenger (ﷺ) entered upon a sick bedouin in whom he went to visit and said to him, "Don' t worry,
Tahur (i. e., your illness will be a means of cleansing of your sins), if Allah Will." The bedouin said,
"Tahur! No, but it is a fever that is burning in the body of an old man and it will make him visit his
grave." The Prophet (ﷺ) said, "Then it is so."
Sahih al-Bukhari 7470