Al-Hijr 15:9

إِنَّا نَحْنُ نَزَّلْنَا ٱلذِّكْرَ وَإِنَّا لَهُۥ لَحَـٰفِظُونَ

Innā naḥnu nazzalnā l-dhik'ra wa-innā lahu laḥāfiẓūna

Indeed, it is We who sent down the message [i.e., the Qur’ān], and indeed, We will be its guardian.