"The Messenger of Allah said: 'When it is very hot, then wait for it to cool down before you pray, for intense heat is from the flaring up of the Hell-fire.'" (Using translation from Ibn Mājah 677)
وَقَالَ رَسُولُ اللهِ ﷺ أَبْرِدُوا عَنِ الْحَرِّ فِي الصَّلَاةِ فَإِنَّ شِدَّةَ الْحَرِّ مِنْ فَيْحِ جَهَنَّمَ