Surah Maryam, ayah 64

19:64

وَمَا نَتَنَزَّلُ إِلَّا بِأَمۡرِ رَبِّكَۖ لَهُۥ مَا بَيۡنَ أَيۡدِينَا وَمَا خَلۡفَنَا وَمَا بَيۡنَ ذَٰلِكَۚ وَمَا كَانَ رَبُّكَ نَسِيّٗا ٦٤

Wamā natanazzalu illā bi amri rabbika lahū mā bayna aydīnā wamā khalfanā wamā bayna dhālika wamā kāna rabbuka nasiyyā

[Gabriel said],821 "And we [angels] descend not except by the order of your Lord. To Him belongs that before us and that behind us and what is in between. And never is your Lord forgetful -

Footnotes

821 In answer to the Prophet's wish that Gabriel would visit him more often.