Al-Muzzammil - 73:14

يَوْمَ تَرْجُفُ الْأَرْضُ وَالْجِبَالُ وَكَانَتِ الْجِبَالُ كَثِيبًا مَّهِيلًا
[73:14]
On the day when the earth and the mountains shall quake and the mountains shall become (as) heaps of sand let loose.
One Day the earth and the mountains will be in violent commotion. And the mountains will be as a heap of sand poured out and flowing down.
On the day when the earth and the hills rock, and the hills become a heap of running sand.