Ibn Ishaq محمد بن إسحاق بن يسار‎ · Medicine (Kitab Al-Tibb)

I heard the Messenger of Allah (ﷺ) say: If any of you is suffering from anything or his brother is suffering, he should say: Our Lord is Allah Who is in the heaven, holy is Thy name, Thy command reigns supreme in the heaven and the earth, as Thy mercy in the heaven, make Thy mercy in the earth; forgive us our sins, and our errors; Thou art the Lord of good men; send down mercy from Thy mercy, and…

the wife of Prophet (ﷺ) said: When the Messenger of Allah (ﷺ) suffered from some pain, he recited mu'awwadhat in his heart and blew (them over him). When the pain became severe, I recited (them) over him and wiped him with his hand in the hope of its blessing.