Sura al-Anbiyāʾ 21:32

وَجَعَلْنَا ٱلسَّمَآءَ سَقْفًا مَّحْفُوظًا وَهُمْ عَنْ ءَايَٰتِهَا مُعْرِضُونَ

wa-jaʿalnā l-samāʾa saqfan maḥfūẓan wa-hum ʿan āyātihā muʿriḍūna

And We have made the heavens as a canopy well guarded: yet do they turn away from the Signs which these things (point to)!

Sura al-Zukhruf 43:33

وَلَوْلَآ أَن يَكُونَ ٱلنَّاسُ أُمَّةً وَٰحِدَةً لَّجَعَلْنَا لِمَن يَكْفُرُ بِٱلرَّحْمَٰنِ لِبُيُوتِهِمْ سُقُفًا مِّن فِضَّةٍ وَمَعَارِجَ عَلَيْهَا يَظْهَرُونَ

wa-lawlā an yakūna l-nāsu ummatan wāḥidatan llajaʿalnā li-man yakfuru bil-raḥmāni li-buyūtihim suqufan min fiḍḍatin wa-maʿārija ʿalayhā yaẓharūna

And were it not that (all) men might become of one (evil) way of life, We would provide, for everyone that blasphemes against (Allah) Most Gracious, silver roofs for their houses and (silver) stair-ways on which to go up,