al-Zuhri ابن شهاب الزهري‎, محمد بن مسلم · Chapters on Medicine

"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."

“I saw the Bedouins asking the Prophet (ﷺ): ‘Is there any harm in such and such, is there any harm in such and such?’ He said to them: ‘O slaves of Allah! Allah has only made harm in that which transgresses the honor of one’s brother. That is what is sinful.’ They said: ‘O Messenger of Allah! Is there any sin if we do not seek treatment?’ He said: ‘Seek treatment, O slaves of Allah! For Allah does not create…

“You should take the two that bring healing: Honey and the Qur’an.”

“On the night on which I was taken on the Night Journey (Isra’), I did not pass by any group of angels but all of them said to me: ‘O Muhammad, you should use cupping.’”

“I recited the Ruqyah for snakebite to the Messenger of Allah (ﷺ), or it was recited to him, and he commanded that it be used.”