Qur'ān 15:21 · Al-Hijr (الحجر)

وَإِن مِّن شَىْءٍ إِلَّا عِندَنَا خَزَآئِنُهُۥ وَمَا نُنَزِّلُهُۥٓ إِلَّا بِقَدَرٍۢ مَّعْلُومٍۢ

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.