15 : 21
وَإِن مِّن شَيۡءٍ إِلَّا عِندَنَا خَزَآئِنُهُۥ وَمَا نُنَزِّلُهُۥٓ إِلَّا بِقَدَرٖ مَّعۡلُومٖ
There is nothing except that We have its treasuries, and We do not send it down except in a determined measure.
Ayah 21 of الحِجر (15 : 21). This page carries the verse in the Uthmani script with a translation of its meaning, at a stable URL that can be cited on its own.
وَإِن مِّن شَيۡءٍ إِلَّا عِندَنَا خَزَآئِنُهُۥ وَمَا نُنَزِّلُهُۥٓ إِلَّا بِقَدَرٖ مَّعۡلُومٖ
There is nothing except that We have its treasuries, and We do not send it down except in a determined measure.