So they were unable to climb it, and they could not penetrate it.
Al-Kahf 18:97
Compare 15 English translations
فَمَا اسْطَاعُوا أَنْ يَظْهَرُوهُ وَمَا اسْتَطَاعُوا لَهُ نَقْبًا
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So they were unable to climb it, and they could not penetrate it.
Gog and Magog couldn't climb over it, and they couldn't dig through it.
So Gog and Magog couldn't climb over it, nor could they break through it.
So they could not scale it, nor could they tunnel through it.
So they could not climb it, nor could they dig through it.
So they could not climb it, nor could they dig through it.
So they [i.e., Gog and Magog] were unable to pass over it, nor were they able [to effect] in it any penetration.
So they [Ya’jûj and Ma’jûj (Gog and Magog)] could not scale it or dig through it.
Thus they could not climb over it nor could they pierce it.
Thus were they made powerless to scale it or to dig through it.
And (Gog and Magog) were not able to surmount, nor could they pierce (it).
So they [Gog and Magog] were not able to scale it, nor were they able to bore through it,
Such was the rampart that Gog and Magog could not scale, nor could they pierce it.
So they could neither scale it, nor could they make a hole in it.
Fama istaAAoo an yathharoohu wama istataAAoo lahu naqban