It is not allowable for the sun to reach the moon, nor does the night overtake the day, but each, in an orbit, is swimming.
The Saheeh International Quran Translation
لَا ٱلشَّمْسُ يَنۢبَغِى لَهَآ أَن تُدْرِكَ ٱلْقَمَرَ وَلَا ٱلَّيْلُ سَابِقُ ٱلنَّهَارِ وَكُلٌّ فِى فَلَكٍ يَسْبَحُونَIt is not allowable for the sun to reach the moon, nor does the night overtake the day, but each, in an orbit, is swimming.