English Translation of Al-Quran .Surah Al-Kahf [The Cave] Ayat 96. "Give me pieces (blocks) of iron," then, when he had filled up the gap between the two mountain-cliffs, he said: "Blow," till when he had made it (red as) fire, he said: "Bring me molten copper to pour over it." Ayat 97. So they [Ya'juj and Ma'juj (Gog and Magog)] were made powerless to scale it or dig through it. [Tafseer] He understand the defences erected to have been a strong barrier of iron, with iron Gates. The jambs of the Gates were constructed with blocks or bricks of iron, and the interstices filled up with molten lead, so as to form an impregnable mass of metal. Made it (red) as fire, what does "it" refer to? Probably to the iron, either in sheets or blocks, to be welded with molten lead. The iron wall and gates and towers were sufficiently high to prevent (Gog and Magog) being scaled and sufficiently strong with welded metal to resist any attempt to dig through them.