On the Day the earth and the mountains will convulse and the (73:14)

Almuntakhab Fi Tafsir Alquran Alkarim

One Day the earth and the mountains shall be thrown into earthquakes, volcanoes and convulsions, and the mountains cave in and become like wind- drifted sand

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(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

On the Day the earth and the mountains will convulse and the meaning

*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."
 

On the Day the earth and the mountains will convulse and the meaning in Urdu

یہ اُس دن ہوگا جب زمین اور پہاڑ لرز اٹھیں گے اور پہاڑوں کا حال ایسا ہو جائے گا جیسے ریت کے ڈھیر ہیں جو بکھرے جا رہے ہیں