The Calamity - 101:5
And the mountains will be like discarded wool.
The state of mountains at the end of the world:
The Cave/18:47
On the Day when We sweep away the mountains and leave the earth bare, We will gather them without leaving a single one.
وَيَوْمَ نُسَيِّرُ الْجِبَالَ وَتَرَى الْاَرْضَ بَارِزَةًۙ وَحَشَرْنَاهُمْ فَلَمْ نُغَادِرْ مِنْهُمْ اَحَداًۚ
The Sure Truth/69:14
When the earth and the mountains are lifted up and crushed together and scattered,
وَحُمِلَتِ الْاَرْضُ وَالْجِبَالُ فَدُكَّتَا دَكَّةً وَاحِدَةً
The One Covering Himself/73:14
The day will come when the earth and the mountains will tremble and the mountains will be like scattered sand.
يَوْمَ تَرْجُفُ الْاَرْضُ وَالْجِبَالُ وَكَانَتِ الْجِبَالُ كَث۪يباً مَه۪يلاً
The Ways of Ascent/70:9
The mountains will be like discarded wool.
وَتَكُونُ الْجِبَالُ كَالْعِهْنِۙ
Ta-Ha/20:105
"They ask you about the mountains. Say, "My Lord will crumble them and scatter them."
وَيَسْـَٔلُونَكَ عَنِ الْجِبَالِ فَقُلْ يَنْسِفُهَا رَبّ۪ي نَسْفاًۙ
Ta-Ha/20:107
You will not see therein the slightest curve or bump.
لَا تَرٰى ف۪يهَا عِوَجاً وَلَٓا اَمْتاً
The Calamity/101:5
And the mountains will be like discarded wool.
وَتَكُونُ الْجِبَالُ كَالْعِهْنِ الْمَنْفُوشِۜ