Quran 10:5 — Jonah (Younus)

He is the One who rendered the sun radiant, and the moon a light, and He designed its phases that you may learn to count the years and to calculate. GOD did not create all this, except for a specific purpose. He explains the revelations for people who know.

[10:4] To Him is your ultimate return, all of you. This is GOD's truthful promise. He initiates the creation, then repeats it, in order to reward those who believe and lead a righteous life, equitably. As for those who disbelieve, they incur hellish drinks, and a painful retribution for their disbelieving.

[10:6] Surely, in the alternation of night and day, and what GOD created in the heavens and the earth, there are proofs for people who are righteous.