Surah Al-Ma'arij (The Pathways of Heavenly Ascent), Verse 9

وَتَكُوْنُ الْجِبَالُ كَالْعِهْنِ ۟

Wa takoonul jibaalu kal'ihn

“And the mountains will be like wool,”

Quran 70:9 (Yusuf Ali Translation)