Sahih Muslim 1395
صحيح مسلم#1395SahihAbu Huraira reported that the Messenger of Allah (may peace he upon him) said:When it is very hot, say (the noon prayer) when the extreme heat passes away, for intensity of heat is from the exhalation of Hell
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: 5:229