Most surely in the creation of the heavens and the earth and the alternation of the night and the day, and the ships that run in the sea with that which profits men, and the water that Allah sends down from the cloud, then gives life with it to the earth after its death and spreads in it all (kinds of) animals, and the changing of the winds and the clouds made subservient between the heaven and the earth, there are signs for a people who understand.

And you see the mountains, you think them to be solid, and they shall pass away as the passing away of the cloud-- the handiwork of Allah Who has made every thing thoroughly; surely He is Aware of what you do.