Quran 70:8
يَوْمَ تَكُونُ السَّمَاءُ كَالْمُهْلِ
The day the sky becomes like molten brass,
The day when the sky will be like molten copper,
The day when the sky will be like molten silver.
Upon the day when heaven shall be as molten copper
(The) Day - will be the sky like molten copper,
It shall befall on a Day whereon the heaven shall become like Unto dregs of oil.
The Day that the sky will be like the boiling filth of oil, (or molten copper or silver or lead, etc.).
It shall befall on a Day whereon the sky will become like molten brass,
On the day when the heavens become like molten metal.
On the day when the heaven shall be as molten copper
The day when the sky will become as molten copper,
On that Day the heaven shall become like molten copper,
On the Day the sky will be like murky oil,
On the Day when the sky will be like molten brass.
On that Day the heavens shall become like molten brass,
The Day that the sky will be like molten brass,