Sahih Muslim , Book 4, Hadith 1285 (USC-MSA) ⓘ
Abu Huraira reported that the Messenger of Allah said: Refrain from saying (the noon prayer) till the extreme heat passes away, for the Intensity of heat is from the exhalation of Hell.
قَالَ عَمْرٌو وَحَدَّثَنِي أَبُو يُونُسَ عَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " أَبْرِدُوا عَنِ الصَّلاَةِ فَإِنَّ شِدَّةَ الْحَرِّ مِنْ فَيْحِ جَهَنَّمَ " .
also referenced under: Book 5, Hadith 232 (In-Book) & Hadith 615 (Reference)