55:37
فَإِذَا ٱنشَقَّتِ ٱلسَّمَآءُ فَكَانَتْ وَرْدَةً كَٱلدِّهَانِ
fa-idhā inshaqqati l-samāu fakānat wardatan kal-dihāni
And when the heaven is split open and becomes rose-colored like oil -
— Saheeh International
When the sky is torn apart and turns crimson, like red hide.
— M. A. S. Abdel Haleem
Then when the heaven is rent asunder, and it becomes rosy or red like red-oil, or red hide - [See V.70:8]
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali