Arabic (Original)
و قَالَ إِذَا اشْتَدَّ الْحَرُّ فَأَبْرِدُوا بِالصَّلَاةِ فَإِنَّ شِدَّةَ الْحَرِّ مِنْ فَيْحِ جَهَنَّمَ.
English Translation
And he said: "When the heat is intense, delay the prayer until it cools, for the intensity of heat is from the exhalation of Hell."