Translation for 18:94

قَالُواْ يَٰذَا ٱلۡقَرۡنَيۡنِ إِنَّ يَأۡجُوجَ وَمَأۡجُوجَ مُفۡسِدُونَ فِي ٱلۡأَرۡضِ فَهَلۡ نَجۡعَلُ لَكَ خَرۡجًا عَلَىٰٓ أَن تَجۡعَلَ بَيۡنَنَا وَبَيۡنَهُمۡ سَدّٗا ٩٤
They pleaded, “O Ⱬul-Qarnain! Surely Gog and Magog1 are spreading corruption throughout the land. Should we pay you tribute, provided that you build a wall between us and them?”

Foot notes

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 Gog and Magog are two wild peoples who were sealed off by a barrier built by Ⱬul-Qarnain to stop them from raiding their peaceful neighbours. There are many speculations as to their location, but none is supported by reliable sources. Their coming out is mentioned in 21:96-97 as one of the major signs of the final Hour.