The Holy Quran 18:97 — Surah Al-Kahf
Arabic text
فَمَا ٱسْطَـٰعُوٓا۟ أَن يَظْهَرُوهُ وَمَا ٱسْتَطَـٰعُوا۟ لَهُۥ نَقْبًا
Translation
(Because of the height, strength and smoothness of the wall) They (the Ya'jooj and Ma'jooj) were not able to climb over it, neither were they able to make a hole in it (at that time).
Tafsir (excerpt) — Tafsir Usmani
Ya'juj and Ma'juj cannot break through the wall: that is, Almighty Allah has not for the present given Ya'juj and Ma'juj the power to climb over the wall or break through it and come out on this side.
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