Surah Al-Kahf — Ayah 96 (18:96)
ءَاتُونِي زُبَرَ ٱلۡحَدِيدِۖ حَتَّىٰٓ إِذَا سَاوَىٰ بَيۡنَ ٱلصَّدَفَيۡنِ قَالَ ٱنفُخُواْۖ حَتَّىٰٓ إِذَا جَعَلَهُۥ نَارٗا قَالَ ءَاتُونِيٓ أُفۡرِغۡ عَلَيۡهِ قِطۡرٗا ٩٦
English translation (Saheeh International)
Bring me bars 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."
Brief commentary
Bring pieces of iron”. They brought them to him, so he began building with them between the two mountains, until when he had made them level with his building, he said to the workers: “Light these pieces”, until when the iron pieces turned red, he said: “Bring copper to pour on top of it”.