Then when the heaven is rent asunder and becomes a red molten - Surah Ar-Rahman ayat 37 in Tafsir

﴿فَإِذَا ٱنشَقَّتِ ٱلسَّمَآءُ فَكَانَتۡ وَرۡدَةٗ كَٱلدِّهَانِ ﴾
[الرَّحمٰن: 37]

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

﴿فإذا انشقت السماء فكانت وردة كالدهان﴾ [الرَّحمٰن: 37]

Dr Kamal Omar
So when the heaven has developed cracks and it has become rosy pink like (olive) oil

Dr Laleh Bakhtiar
Then, when the heaven was split then, it had been crimson like red leather

Dr Munir Munshey
And then the sky shall split asunder and turn red, just like (freshly tanned) leather

Edward Henry Palmer
And when the heaven is rent asunder and become rosy red - (melting) like grease

Farook Malik
When the heaven will burst and will become red like red hide

George Sale
And when the heaven shall be rent in sunder, and shall become red as a rose, and shall melt like ointment

Maududi
(What will happen) when the heaven will be split asunder and will become crimson like leather