Al-Kahf 18:47

Wayawma nusayyiru aljibala wataraal-arda barizatan wahasharnahum falamnughadir minhum ahada

And [warn of] the Day when We will remove the mountains and you will see the earth exposed, and We will gather them and not leave behind from them anyone.

And (visualize) the Day when We will make mountains move, and you will see the earth fully exposed, and We shall gather them together, so as not to leave a single one of them.