Al Hijr, 21 Ayah
15:21
وَإِن مِّن شَيۡءٍ إِلَّا عِندَنَا خَزَآئِنُهُۥ وَمَا نُنَزِّلُهُۥٓ إِلَّا بِقَدَرٖ مَّعۡلُومٖ ٢١
Wa 'In Min Shay'in 'Illā `Indanā Khazā'inuhu Wa Mā Nunazziluhu 'Illā Biqadarin Ma`lūmin
And there is not a thing but that with Us are its depositories, and We do not send it down except according to a known measure.