The word(s) "molten" appears 4 time(s) in 4 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) And say: The truth is from your Lord, so let him who please believe, and let him who please disbelieve; surely We have prepared for the iniquitous a fire, the curtains of which shall encompass them about; and if they cry for water, they shall be given water like molten brass which will scald their faces; evil the drink and ill the resting-place.

(2) Bring me blocks of iron; until when he had filled up the space between the two mountain sides, he said: Blow, until when he had made it (as) fire, he said: Bring me molten brass which I may pour over it.

(3) And (We made) the wind (subservient) to Sulaiman, which made a month's journey in the morning and a month's journey in the evening, and We made a fountain of molten copper to flow out for him, and of the jinn there were those who worked before him by the command of his Lord; and whoever turned aside from Our command from among them, We made him taste of the punishment of burning.

(4) On the day when the heaven shall be as molten copper