﴿ ٱلَّذِى خَلَقَ سَبْعَ سَمَٰوَٰتٍۢ طِبَاقًۭا ۖ مَّا تَرَىٰ فِى خَلْقِ ٱلرَّحْمَٰنِ مِن تَفَٰوُتٍۢ ۖ فَٱرْجِعِ ٱلْبَصَرَ هَلْ تَرَىٰ مِن فُطُورٍۢ ﴾

“[Hallowed be] He who has created seven heavens in full harmony with one another: no fault will thou see in the creation of the Most Gracious. And turn thy vision [upon it] once more: canst thou see any flaw?”

Please check ayah 67:5 for complete tafsir.