He is the One Who made the sun a radiant source and the moon a reflected light, with precisely ordained phases, so that you may know the number of years and calculation ˹of time˺. Allah did not create all this except for a purpose. He makes the signs clear for people of knowledge.

It is He Who made the sun a shining thing and the moon as a light and measured out for it stages that you might know the number of years and the reckoning. Allâh did not create this but in truth. He explains the Ayât (proofs, evidence, verses, lessons, signs, revelations, etc.) in detail for people who have knowledge.