Surah Yunus, Verse 5

هُوَ ٱلَّذِي جَعَلَ ٱلشَّمۡسَ ضِيَآءٗ وَٱلۡقَمَرَ نُورٗا وَقَدَّرَهُۥ مَنَازِلَ لِتَعۡلَمُواْ عَدَدَ ٱلسِّنِينَ وَٱلۡحِسَابَۚ مَا خَلَقَ ٱللَّهُ ذَٰلِكَ إِلَّا بِٱلۡحَقِّۚ يُفَصِّلُ ٱلۡأٓيَٰتِ لِقَوۡمٖ يَعۡلَمُونَ٥

huwa alladhī jaʿala l-shamsa ḍiyāan wal-qamara nūran waqaddarahu manāzila litaʿlamū ʿadada l-sinīna wal-ḥisāba mā khalaqa l-lahu dhālika illā bil-ḥaqi yufaṣṣilu l-āyāti liqawmin yaʿlamūna

It is He who made the sun a shining light and the moon a derived light and determined for it phases - that you may know the number of years and account [of time]. Allāh has not created this except in truth. He details the signs for a people who know.