Surah Al-Anbya — Ayah 33 (21:33)
وَهُوَ ٱلَّذِي خَلَقَ ٱلَّيۡلَ وَٱلنَّهَارَ وَٱلشَّمۡسَ وَٱلۡقَمَرَۖ كُلّٞ فِي فَلَكٖ يَسۡبَحُونَ ٣٣
English translation (Saheeh International)
And it is He who created the night and the day and the sun and the moon; all [heavenly bodies] in an orbit are swimming.
Brief commentary
Allah alone is the One Who created the night for relaxation, created the day for earning one’s livelihood, created the sun as a sign of day, and the moon as a sign of night. The sun and moon both run in their specific orbits, without moving away or side-tracking.