15:21
وَإِن مِّن شَىْءٍ إِلَّا عِندَنَا خَزَآئِنُهُۥ وَمَا نُنَزِّلُهُۥٓ إِلَّا بِقَدَرٍ مَّعْلُومٍ
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.
The Rocky Tract
وَإِن مِّن شَىْءٍ إِلَّا عِندَنَا خَزَآئِنُهُۥ وَمَا نُنَزِّلُهُۥٓ إِلَّا بِقَدَرٍ مَّعْلُومٍ
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.
Nearby ayahs help place verse 15:21 in sequence and meaning.
وَٱلْأَرْضَ مَدَدْنَـٰهَا وَأَلْقَيْنَا فِيهَا رَوَٰسِىَ وَأَنۢبَتْنَا فِيهَا مِن كُلِّ شَىْءٍ مَّوْزُونٍ
And the earth - We have spread it and cast therein firmly set mountains and caused to grow therein [something] of every well-balanced thing.
وَجَعَلْنَا لَكُمْ فِيهَا مَعَـٰيِشَ وَمَن لَّسْتُمْ لَهُۥ بِرَٰزِقِينَ
And We have made for you therein means of living and [for] those for whom you are not providers.
وَأَرْسَلْنَا ٱلرِّيَـٰحَ لَوَٰقِحَ فَأَنزَلْنَا مِنَ ٱلسَّمَآءِ مَآءً فَأَسْقَيْنَـٰكُمُوهُ وَمَآ أَنتُمْ لَهُۥ بِخَـٰزِنِينَ
And We have sent the fertilizing winds and sent down water from the sky and given you drink from it. And you are not its retainers.
وَإِنَّا لَنَحْنُ نُحْىِۦ وَنُمِيتُ وَنَحْنُ ٱلْوَٰرِثُونَ
And indeed, it is We who give life and cause death, and We are the Inheritor.