Translation of the verse 14 from Surah Al-Muzzammil : Number of verses 20 - - page 574 - Part 29.
On the Day when the earth and the mountains will be in violent shake, and the mountains will be a heap of sand poured out and flowing down.
On the Day the earth and the mountains will convulse and the mountains will become a heap of sand pouring down.
(73:14) (They will come across all this) on the Day when the earth and the mountains shall tremble violently and the mountains shall crumble into heaps of scattered sand. *14
*14) Since at that time the cohesive force to bind the parts of the mountains together will cease to work, first they will become like crumbling dunes of fine sand, then because of the earthquake which will be shaking the earth; the sand will scatter and shift and the whole earth will turn into an empty level plain. This last state has been described in Ta Ha: 105-107, thus: "They ask you: where will the mountains go on that Day? Say: My Lord will reduce them to fine dust and scatter it away. He will turn the earth into an empty level plain, wherein you will neither see any curve no crease."