Surah Al-Muzzammil — Ayah 14 (73:14)
يَوۡمَ تَرۡجُفُ ٱلۡأَرۡضُ وَٱلۡجِبَالُ وَكَانَتِ ٱلۡجِبَالُ كَثِيبٗا مَّهِيلًا ١٤
English translation (Saheeh International)
On the Day the earth and the mountains will convulse and the mountains will become a heap of sand pouring down.
Brief commentary
That punishment will occur to those who deny on the day when the earth and the mountains will shake and the mountains will become scattered flowing sand because of its extreme horror.