The Rocky Tract - 15:22
We sent the wind as an instiller, and We sent down water from the sky and watered you with it, but you could not store it.
How was the water from the sky stored?
The Companies/39:21
Do you not see that Allah sends down water from the sky and causes it to flow into springs in the earth, then He brings forth with it plants of various colors? Then it dries up and you see it yellow. Then He turns it to rubbish. In this is an admonition for those of understanding
The Believers/23:18
We sent down water from the sky in a certain proportion and We stored it in the earth, and We are certainly able to remove it.