Ar-Rahman - 55:37

فَإِذَا انشَقَّتِ السَّمَاء فَكَانَتْ وَرْدَةً كَالدِّهَانِ
[55:37]
And when the heaven is rent asunder, and then becomes red like red hide.
When the sky is rent asunder, and it becomes red like ointment:
And when the heaven splitteth asunder and becometh rosy like red hide -