Surah Al-Anbya (21:96)
حَتَّىٰٓ إِذَا فُتِحَتْ يَأْجُوجُ وَمَأْجُوجُ وَهُم مِّن كُلِّ حَدَبٍ يَنسِلُونَ
Until, when Gog and Magog have been opened, and they, from every mound, are swarming out,
Roots in this verse: ف ت ح (ftH), ك ل ل (kll), ح د ب (Hdb), ن س ل (nsl)