Surah An-Nazi'at 79:29

وَأَغْطَشَ لَيْلَهَا وَأَخْرَجَ ضُحَىٰهَا

And He darkened its night and extracted its brightness.

Translation: Saheeh International

Tafsir

and darkened its night and brought forth its day He exposed the light of its sun ‘night’ has been annexed to it the heaven because it represents its shade and likewise the ‘sun’ because it represents its light;

Excerpt from Tafsir al-Jalalayn, commentary on 79:29, via Quran.com. The reader has the full commentary and 9 more tafsirs.