Surah Al-Anbya — Ayah 104 (21:104)

English translation (Saheeh International)

The Day when We will fold the heaven like the folding of a [written] sheet for the records. As We began the first creation, We will repeat it. [That is] a promise binding upon Us. Indeed, We will do it.¹

1. - More literally, "Indeed, We are ever doers" of what We will.

Brief commentary

On the day in which I shall roll up the heavens like the rolling up of a scroll, and congregate the creation in the state they were created in the first instance. I have promised that it will happen; a promise that there is no going back on. I shall indeed fulfil My promise.