"While he was on the pulpit "“ the pulpit of Al-Basrah "“ `Utbah bin Ghazwain narrated that the Messenger of Allah (ﷺ) said: "Indeed a giant rock can be thrown from the brink of Hell and it will continue to fall into it for seventy years without reaching the bottom of it." .He said: "`Umar used to say:'Increase in your remembrance of the Fire, for its heat is extreme, its bottom is distant, and its whips are of Iron.'" (Sahih)