Surat Al Kahf (95-96)

{قَالَ مَا مَكَّنِّي فِيهِ رَبِّي خَيْرٌ فَأَعِينُونِي بِقُوَّةٍ أَجْعَلْ بَيْنَكُمْ وَبَيْنَهُمْ رَدْماً} (الكهف: 95)

95- Dhul-Qarnayn said to them: The kingdom and power which Allah has given me is better than the money you accumulate for me, so leave this aside and help me with your power and material to build a strong barrier and an immune fort between you and them.

{آتُونِي زُبَرَ الْحَدِيدِ حَتَّى إِذَا سَاوَى بَيْنَ الصَّدَفَيْنِ قَالَ انفُخُوا حَتَّى إِذَا جَعَلَهُ نَاراً قَالَ آتُونِي أُفْرِغْ عَلَيْهِ قِطْراً} (الكهف: 96)

96- Bring me the huge pieces of iron. They brought them to him, and he started to build a barrier between the two mountains until he blocked the way between the two mountains then he said to the labors: Blow into fire with bellows. When iron became red like fire, he said to them: Bring me melted cupper to pour it on iron.