Al-Kahf · Ayah 97
فَمَا ٱسْطَٰعُوٓا۟ أَن يَظْهَرُوهُ وَمَا ٱسْتَطَٰعُوا۟ لَهُۥ نَقْبًا
So they [i.e., Gog and Magog] were unable to pass over it, nor were they able [to effect] in it any penetration.
Quran 18:97 (Al-Kahf) · Saheeh International, Noor International Center (QuranEnc v1.1.2)