﴿ وَإِن مِّن شَىْءٍ إِلَّا عِندَنَا خَزَآئِنُهُۥ وَمَا نُنَزِّلُهُۥٓ إِلَّا بِقَدَرٍۢ مَّعْلُومٍۢ ﴾

“For, no single thing exists that does not have its source with Us; and nought do We bestow from on high unless it be in accordance with a measure well-defined.”

(And there is not a thing) of vegetation, fruits or rains (but with Us are the stores thereof) except that We have its keys; its keys are in Our Hand not in yours. (And We send it) i.e. rain (not down save in appointed measure) with a specific quantity and weight known to the One Who stores it.