The Mu'adh-dhin (call-maker) of the Prophet (ﷺ) pronounced the Adhan (call) for the Zuhr prayer but theProphet said, "Let it be cooler, let it be cooler." Or said, 'Wait, wait, because the severity of heat isfrom the raging of the Hell-fire. In severe hot weather, pray when it becomes (a bit) cooler and theshadows of hillocks appear."