Al-Kahf 18:97 · سُورَةُ الكهف

فَمَا ٱسْطَـٰعُوٓا۟ أَن يَظْهَرُوهُ وَمَا ٱسْتَطَـٰعُوا۟ لَهُۥ نَقْبًا

famā is'ṭāʿū an yaẓharūhu wamā is'taṭāʿū lahu naqban

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

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