Al-Anbya 21:96

Hatta itha futihatya/jooju wama/jooju wahum min kulli hadabin yansiloon

Until when [the dam of] Gog and Magog has been opened and they, from every elevation, descend

until when the Ya’jūj and Ma’jūj (Gog and Magog) are released, while they run down from every height,