Surah Al-Kahf
قَالُوا۟ يَـٰذَا ٱلْقَرْنَيْنِ إِنَّ يَأْجُوجَ وَمَأْجُوجَ مُفْسِدُونَ فِى ٱلْأَرْضِ فَهَلْ نَجْعَلُ لَكَ خَرْجًا عَلَىٰٓ أَن تَجْعَلَ بَيْنَنَا وَبَيْنَهُمْ سَدًّا
Qālū yā żal-qarnaini inna ya'jūja wa ma'jūja mufsidūna fil-arḍi fahal naj‘alu laka kharjan ‘alā an taj‘alā bainanā wa bainahum saddā(n).
They said, "O Dhul-Qarnayn, indeed Gog and Magog are [great] corrupters in the land. So may we assign for you an expenditure that you might make between us and them a barrier?"
📝 Footnotes
456) Gog and Magog (Ya'juj and Ma'juj) are two nations that spread corruption and mischief throughout the earth.