﴿ يَوْمَ تَكُونُ ٱلسَّمَآءُ كَٱلْمُهْلِ ﴾

“[It will take place] on a Day when the sky will be like molten lead,”

Allah then explained when they will be chastised, saying: (The day when the sky will become as molten copper) and it is said: like the sediments of olive oil,