Surah Al-Insan, ayah 23

إِنَّا نَحۡنُ نَزَّلۡنَا عَلَيۡكَ ٱلۡقُرۡءَانَ تَنزِيلٗا ٢٣

Innā nahnu nazzalnā 'alaykal-qur'āna tanzīlā

Indeed, it is We who have sent down to you, [O Muḥammad], the Qur’ān progressively.