And when the heaven is split open and becomes rose-colored like oil (55:37)

Almuntakhab Fi Tafsir Alquran Alkarim

Then when the heaven is rent asunder and becomes a red molten mass that soaked up all the rose of the flames of the fire

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(55:37) (What will happen) when the heaven will be split asunder and will become crimson like leather? *34

And when the heaven is split open and becomes rose-colored like oil meaning

*34) This refers to the Day of Resurrection. Bursting of the heavens implies loosening of the discipline of the heavens, scattering of the celestial bodies, upsetting of the system of the heavens. And the meaning of `reddening like red leather" is that during that great upheaval anyone who looks up towards the sky, will feel as though the entire heavens were on fire.
 

And when the heaven is split open and becomes rose-colored like oil meaning in Urdu

پھر (کیا بنے گی اُس وقت) جب آسمان پھٹے گا اور لال چمڑے کی طرح سرخ ہو جائے گا؟