it was he that made the sun a brightness and the moon a light and determined it in phases so that you might know the number of years and the reckoning. allah did not create them except in truth and distinguishes the verses to a nation who know.
هو الذي جعل الشمس ضياء والقمر نورا وقدره منازل لتعلموا عدد السنين والحساب ما خلق الله ذلك إلا بالحق يفصل الآيات لقوم يعلمون