Surah Al-Waqi'ah, verse 77

۞ فَلَآ أُقْسِمُ بِمَوَٰقِعِ ٱلنُّجُومِ ﴿٧٥﴾

Then I swear by the setting of the stars,

وَإِنَّهُۥ لَقَسَمٌۭ لَّوْ تَعْلَمُونَ عَظِيمٌ ﴿٧٦﴾

And indeed, it is an oath - if you could know - [most] great.

فِى كِتَـٰبٍۢ مَّكْنُونٍۢ ﴿٧٨﴾

In a Register well-protected;.

لَّا يَمَسُّهُۥٓ إِلَّا ٱلْمُطَهَّرُونَ ﴿٧٩﴾

None touch it except the purified [i.e., the angels].