Sahih Muslim 5714
صحيح مسلم#5714SahihA'isha reported that when any of the members of the household fell ill Allah's Messenger (ﷺ) used to blow over him by reciting Mu'awwidhatan, and when he suffered from illness of which he died I used to blow over him and rubbed his body with his hand for his hand had greater healing power than my hand
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 39:68