Sahih al-Bukhari 5726
صحيح البخاري#5726SahihNarrated Rafi` bin Khadij:I heard Allah's Messenger (ﷺ) saying, "Fever is from the heat of Hell, so abate fever 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 al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 76:41