Thus it was. We encompassed in knowledge whatever he had with him.

Thereafter he followed a way

until when he reached between the two mountains, he found on their hither side a people who did not seem to understand anything said.

They said, "0 Dhul-Qarnain, the Ya'juj and Ma'juj (Gog and Magog) are mischief-makers on the earth. So shall we set for you a revenue, provided that you make a barrier between us and them?"

He said, 'That which my Lord has placed under my control is better, so help me with strength and I shall make a rampart between you and them.

Bring me ingots of iron." (They proceeded accordingly) until when he leveled up (the gap) between the two mountain-sides, he said, "Blow." (They complied) until when he made it (like) fire, he said, 'Bring me molten copper and I will pour it upon this."

So they (Ya'juj and Ma'juj) were not able to climb it, nor were they able to make a hole in it.

He said, 'This is a mercy from my Lord. Then, when the promise of my Lord will come, He will make it leveled to the ground. And the promise of my Lord is always true."

And on that day, We will leave them (Ya'juj and Ma'juj) surging over one another. And the Horn shall be blown then We shall gather them together.

And on that day We will bring Jahannam fully exposed before the infidels