Surah At-Takwir, verse 21

إِنَّهُۥ لَقَوْلُ رَسُولٍۢ كَرِيمٍۢ ﴿١٩﴾

[That] indeed, it [i.e., the Qur’ān] is a word [conveyed by] a noble messenger [i.e., Gabriel]

ذِى قُوَّةٍ عِندَ ذِى ٱلْعَرْشِ مَكِينٍۢ ﴿٢٠﴾

[Who is] possessed of power and with the Owner of the Throne, secure [in position],

وَمَا صَاحِبُكُم بِمَجْنُونٍۢ ﴿٢٢﴾

And your companion [i.e., Prophet Muḥammad (ﷺ) ] is not [at all] mad.

وَلَقَدْ رَءَاهُ بِٱلْأُفُقِ ٱلْمُبِينِ ﴿٢٣﴾

And he has already seen him [i.e., Gabriel] in the clear horizon.