٤١ : ١٢
فَقَضَىٰهُنَّ سَبۡعَ سَمَٰوَاتٖ فِي يَوۡمَيۡنِ وَأَوۡحَىٰ فِي كُلِّ سَمَآءٍ أَمۡرَهَاۚ وَزَيَّنَّا ٱلسَّمَآءَ ٱلدُّنۡيَا بِمَصَٰبِيحَ وَحِفۡظٗاۚ ذَٰلِكَ تَقۡدِيرُ ٱلۡعَزِيزِ ٱلۡعَلِيمِ
He then formed them into seven heavens in two Days and assigned to each heaven its mandate. And We adorned the lowest heaven with lamps [i.e., stars] which also serve as protection. That is the design of the All-Mighty, the All-Knowing.”
شرح ومعانٍ · ٢
- i.e., on Thursday and Friday. So the total period of creating the whole universe was six heavenly Days.
- i.e., protection from the devils who try to steal information from the angels in heaven.