Prophet Jonah - 10:5
He made the sun a source of light and the moon a light. He has given it phases so that you may know the number of years and reckoning. Allah has created these only for a truth. This is how He explains the verses to a people who know.
What are the phases of the moon?
Yaseen/36:39
And We appointed for the moon various stages until it turns into a dry palm branch.
Prophet Jonah/10:5
He made the sun a source of light and the moon a light. He has given it phases so that you may know the number of years and reckoning. Allah has created these only for a truth. This is how He explains the verses to a people who know.
The Cow/2:189
They ask you about the phases of the moon. Say that it is a measure of time for mankind and for the pilgrimage. Goodness is not beating around the bush, goodness is abstinence. Be honest. Listen to Allah for your salvation.