Answer 280-82
Eternity of Heaven and Hell
Some have said, “Hell will not touch us, except for a limited number of days.” Say, “Have you taken such a pledge from GOD—GOD never breaks His pledge—or, are you saying about GOD what you do not know?”
Indeed, those who earn sins and become surrounded by their evil work will be the dwellers of Hell; they abide in it forever.
As for those who believe, and lead a righteous life, they will be the dwellers of Paradise; they abide in it forever.