فَقَضَىٰهُنَّ سَبۡعَ سَمَٰوَاتٖ فِي يَوۡمَيۡنِ وَأَوۡحَىٰ فِي كُلِّ سَمَآءٍ أَمۡرَهَاۚ وَزَيَّنَّا ٱلسَّمَآءَ ٱلدُّنۡيَا بِمَصَٰبِيحَ وَحِفۡظٗاۚ ذَٰلِكَ تَقۡدِيرُ ٱلۡعَزِيزِ ٱلۡعَلِيمِ

Faqadaahunna sab'a samaawaatin fee yawmaini wa awhaa fee kulli samaaa'in amarahaa; wa zaiyannassa maaa'ad dunyaa bimasaabeeha wa hifzaa; zaalika taqdeerul 'Azeezil 'Aleem

So He completed them as seven firmaments in two Days, and He assigned to each heaven its duty and command. And We adorned the lower heaven with lights, and (provided it) with guard. Such is the Decree of (Him) the Exalted in Might, Full of Knowledge.

— Fusilat (فُصِّلَت), 41:12