Surah Al-Kahf · The Cave · Verse 97/110

Qur'an 18:97

فَمَا ٱسْطَٰعُوٓا۟ أَن يَظْهَرُوهُ وَمَا ٱسْتَطَٰعُوا۟ لَهُۥ نَقْبًۭا

So Gog and Magog were unable to pass over it, nor were they able [to effect] in it any penetration.

Quran 18:97 — Al-Kahf (الكهف)