Quran Al-Anbya 21:96
حَتَّىٰٓ إِذَا فُتِحَتۡ يَأۡجُوجُ وَمَأۡجُوجُ وَهُم مِّن كُلِّ حَدَبٖ يَنسِلُونَ ٩٦
Translation
Until when [the dam of] Gog and Magog has been opened and they, from every elevation, descend
حَتَّىٰٓ إِذَا فُتِحَتۡ يَأۡجُوجُ وَمَأۡجُوجُ وَهُم مِّن كُلِّ حَدَبٖ يَنسِلُونَ ٩٦
Until when [the dam of] Gog and Magog has been opened and they, from every elevation, descend