Sahih Muslim 1397
صحيح مسلم#1397SahihAbu Huraira reported:The Messenger of Allah (ﷺ) said: When it is a hot day, (delay) the prayer till the extreme heat passes away, for the intensity of heat is from the exhalation of Hell. Abu Huraira reported that the Messenger of Allah (ﷺ) said: Refrain from saying (the noon prayer) till the extreme heat passes away, for the Intensity of heat is from the exhalation of Hell. Abu Huraira narrated this hadith from the Messenger of Allah (may peace be up on him) by another chain of transmitters
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: 5:231