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.
هُوَ الَّذى جَعَلَ الشَّمسَ ضِياءً وَالقَمَرَ نورًا وَقَدَّرَهُ مَنازِلَ لِتَعلَموا عَدَدَ السِّنينَ وَالحِسابَ ما خَلَقَ اللَّهُ ذٰلِكَ إِلّا بِالحَقِّ يُفَصِّلُ الـٔايٰتِ لِقَومٍ يَعلَمونَ
huwal lazee ja’alash shamsa diyaaa’anw walqamara nooranw wa qaddarahoo manaazila li ta’lamoo ‘adadas sineena walhisaab; maa khalaqal laahu zaalika illa bilhaqq; yufassilul aayaati li qawminy ya’lamoon