﴿ فَإِذَا ٱنشَقَّتِ ٱلسَّمَآءُ فَكَانَتْ وَرْدَةًۭ كَٱلدِّهَانِ ﴾

“And when the sky is rent asunder and becomes red like [burning] oil”

And when the heaven splitteth asunder) because of the descent of the angels and awe towards the Lord (and becometh rosy) and become coloured (like red hide) like different kinds of paint; and it is said: like the different colours of roses; and it is also said: red in black