They will ask you about Dhu'l-Qarnayn. Say, "I will give you an account of him." 83 We granted him power in the land and endowed him with all kinds of resources. 84 One (such) way he followed, 85 until when he reached the very limits where the sun sets, he saw it setting in dark turbid waters; and nearby he met a people. We said: "O Dhu al-Qarnayn, you have the power to punish or to treat them with kindness." 86 He said, "We shall certainly punish him who does wrong; then he shall be brought back to his Lord who will punish him with a grievous punishment, 87 But as for him who believeth and doeth right, good will be his reward, and We shall speak unto him a mild command. 88 Then followed he (another) way, 89 [And then he marched eastwards] till, when he came to the rising of the sun he found that it was rising on a people for whom We had provided no coverings against it: 90 Thus indeed it was. We had full knowledge of him. 91 Then he followed (another) way, 92 after this to the middle of two mountains where he found a people who could hardly understand a single word. 93 'ThulKarnain' they said, 'Look, Gog and Magog are corrupting the earth. Build for us a barrier between us and them, and we will pay you a tribute' 94 He answered: "Whatever my Lord has granted me is good enough. But help me with your labour and I will erect a rampart between you and them. 95 Bring me ingots of iron' After he had leveled between the two cliffs, he said: 'Blow' And when he made it a fire, he said: 'Bring me molten copper so that I may pour over it' 96 Such was the rampart that Gog and Magog could not scale, nor could they pierce it. 97 He said: this is a mercy from my Lord; then when the promise of my Lord cometh, He shall make it powder, and the promise of my Lord is ever true. 98 ۞ On that day We shall leave them to surge like waves on one another: the trumpet will be blown, and We shall collect them all together. 99 We will fully expose the view of hell on that Day to the disbelievers, 100 Unto those whose eyes had been under a covering from My remembrance, nor had they been able to hear. 101