وَإِن مِن شَيءٍ إِلّا عِندَنا خَزائِنُهُ وَما نُنَزِّلُهُ إِلّا بِقَدَرٍ مَعلومٍ

There is not a thing but that with Us are its storehouses, and We dispense it in known measure.