(32) باب اسْتِحْبَابِ الإِبْرَادِ بِالظُّهْرِ فِي شِدَّةِ الْحَرِّ لِمَنْ يَمْضِي إِلَى جَمَاعَةٍ وَيَنَالُهُ الْحَرُّ فِي طَرِيقِهِ
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.
Reference: Sahih Muslim 615 c
In-book reference: Book 5, Hadith 232
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1285