It was narrated from Abu Musa in a Marfu' [1] report:
"Wait until it cools down to pray Zuhr, for the heat you experience is a breeze from Hell."[1] Meaning he attributed it to the Prophet (ﷺ). (ES)
English reference (ES): Vol. 1, Book 6, Hadith 502 (ES)
Arabic reference (ES): Book 6, Hadith 505 (ES)