تفسير : allah then explained when they will be chastised, saying: (the day when the sky will become as molten copper) and it is said: like the sediments of olive oil,
Jalāl al-Dīn al-Maḥallī
تفسير : the day when the heaven will be (yawma takūnu’l-samā’u is semantically connected to an omitted clause, implicitly taken to be yaqa‘u, ‘it will take place’) as molten silver,
