Surah An-Nahl, ayah 102

16:102

قُلۡ نَزَّلَهُۥ رُوحُ ٱلۡقُدُسِ مِن رَّبِّكَ بِٱلۡحَقِّ لِيُثَبِّتَ ٱلَّذِينَ ءَامَنُواْ وَهُدٗى وَبُشۡرَىٰ لِلۡمُسۡلِمِينَ ١٠٢

Qul nazzalahū rūhul-qudusi mir rabbika bil-haqqi liyuthabbital-ladhīna āmanū wahudan wabushrā lil-muslimīn

Say, [O Muḥammad], "The Pure Spirit [i.e., Gabriel] has brought it down from your Lord in truth to make firm those who believe and as guidance and good tidings to the Muslims."