Quran Al-Kahf 18:97
فَمَا ٱسۡطَٰعُوٓاْ أَن يَظۡهَرُوهُ وَمَا ٱسۡتَطَٰعُواْ لَهُۥ نَقۡبٗا ٩٧
Translation
So they [i.e., Gog and Magog] were unable to pass over it, nor were they able [to effect] in it any penetration.
فَمَا ٱسۡطَٰعُوٓاْ أَن يَظۡهَرُوهُ وَمَا ٱسۡتَطَٰعُواْ لَهُۥ نَقۡبٗا ٩٧
So they [i.e., Gog and Magog] were unable to pass over it, nor were they able [to effect] in it any penetration.