Quran, Surah Ar-Rūm (30:5-8):
“With the help of Allah. He helps whom He will, and He is exalted in might, most merciful. (It is) the promise of Allah. Never does Allah depart from His promise: but most men understand not.
They know but the outer (things) in the life of this world: but of the End of things they are heedless.
Do they not reflect in their own minds? Not but for just ends and for a term appointed, did Allah create the heavens and the earth, and all between them: yet are there truly many among men who deny the meeting of their Lord (at the Resurrection)!”