18. Kehf · Verse 97

سورة الكهف
97

فَمَا ٱسۡطَٰعُوٓاْ أَن يَظۡهَرُوهُ وَمَا ٱسۡتَطَٰعُواْ لَهُۥ نَقۡبٗا

Thus were they made powerless to scale it or to dig through it.