Sahih Muslim 1398
صحيح مسلم#1398SahihAbu Huraira reported that the Messenger of Allah (ﷺ) said:This heat is from the exhalation of Hell-fire, so delay the prayer till it is cool
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: 5:232