Surah Al-Kahf Verse 94 - English Translation by Muhammad Mahmoud Ghali
Surah Al-Kahfقَالُواْ يَٰذَا ٱلۡقَرۡنَيۡنِ إِنَّ يَأۡجُوجَ وَمَأۡجُوجَ مُفۡسِدُونَ فِي ٱلۡأَرۡضِ فَهَلۡ نَجۡعَلُ لَكَ خَرۡجًا عَلَىٰٓ أَن تَجۡعَلَ بَيۡنَنَا وَبَيۡنَهُمۡ سَدّٗا
They said, "O Thulqarnayn! Surely Yajuj and Majuj (God and Magog) are corruptors in the earth; so shall we make for you a tribute on condition that you make a barrier between us and them?" (Literally: between us and between them)