Al-Kahf 18:98

قَالَ مَا مَكَّنِّي فِيهِ رَبِّي خَيْرٌ فَأَعِينُونِي بِقُوَّةٍ أَجْعَلْ بَيْنَكُمْ وَبَيْنَهُمْ رَدْمًا

He said, "That in which my Lord has established me is better [than what you offer], but assist me with strength; I will make between you and them a dam.

آتُونِي زُبَرَ الْحَدِيدِ ۖ حَتَّىٰ إِذَا سَاوَىٰ بَيْنَ الصَّدَفَيْنِ قَالَ انفُخُوا ۖ حَتَّىٰ إِذَا جَعَلَهُ نَارًا قَالَ آتُونِي أُفْرِغْ عَلَيْهِ قِطْرًا

Bring me sheets of iron" - until, when he had leveled [them] between the two mountain walls, he said, "Blow [with bellows]," until when he had made it [like] fire, he said, "Bring me, that I may pour over it molten copper."

فَمَا اسْطَاعُوا أَن يَظْهَرُوهُ وَمَا اسْتَطَاعُوا لَهُ نَقْبًا

So Gog and Magog were unable to pass over it, nor were they able [to effect] in it any penetration.

وَتَرَكْنَا بَعْضَهُمْ يَوْمَئِذٍ يَمُوجُ فِي بَعْضٍ ۖ وَنُفِخَ فِي الصُّورِ فَجَمَعْنَاهُمْ جَمْعًا

And We will leave them that day surging over each other, and [then] the Horn will be blown, and We will assemble them in [one] assembly.

وَعَرَضْنَا جَهَنَّمَ يَوْمَئِذٍ لِّلْكَافِرِينَ عَرْضًا

And We will present Hell that Day to the Disbelievers, on display -

الَّذِينَ كَانَتْ أَعْيُنُهُمْ فِي غِطَاءٍ عَن ذِكْرِي وَكَانُوا لَا يَسْتَطِيعُونَ سَمْعًا

Those whose eyes had been within a cover [removed] from My remembrance, and they were not able to hear.