Sahih Muslim 5759
صحيح مسلم#5759SahihRafi' b. Khadij reported:I heard Allah's messenger (ﷺ) as saying: The fever is due to the intense heat of the Hell, so cool it with water
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: 39:113