فَمَا ٱسۡطَٰعُوٓاْ أَن يَظۡهَرُوهُ وَمَا ٱسۡتَطَٰعُواْ لَهُۥ نَقۡبٗا
Rowwad Translation Center
Thus they could not climb over it nor could they pierce it[1].
Notes
[1] They could not climb the dam for its smooth surface as well as it was as high as the mountains, and could not pierce it for its fortitude.
Translation: Rowwad Translation Center. Source: QuranEnc.com, version 1.0.20.
Arabic text: King Fahd Glorious Quran Printing Complex. Surah details: Tanzil.net (CC BY 3.0).
This is a translation of the meanings of the Quran. Like any human work, it may contain errors.