Gog and Magog
They said, “O Dhul-Qarnayn, Gog and Magog are spreading corruption in the land. Can we pay you to build a barrier between them and us?”
18:94They said: O Dhu'l-Qarneyn! Lo! Gog and Magog are spoiling the land. So may we pay thee tribute on condition that thou set a barrier between us and them?