Rain
Do you not see how Allah sends down rain from the sky, and the earth turns green?
22:63Seest thou not how Allah sendeth down water from the sky and then the earth becometh green upon the morrow? Lo! Allah is Subtile, Aware.
39:21Hast thou not seen how Allah hath sent down water from the sky and hath caused it to penetrate the earth as watersprings, and afterward thereby produceth crops of divers hues; and afterward they wither and thou seest them turn yellow; then He maketh them chaff. Lo! herein verily is a reminder for men of understanding.