And He darkened its night and extracted its brightness. (79:29)

Almuntakhab Fi Tafsir Alquran Alkarim

Its night did He darken and the day did He pervade with light and illuminate

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(79:29) and covered its night with darkness and brought forth from it its day; *15

And He darkened its night and extracted its brightness. meaning

*15) The night and the day have been attributed to the heaven, for the night falls when the sun of the heavens sets and the day dawns when it rises. The word "cover" has been used for the night in the sense that after the sun has set the darkness of the night so spreads over the earth as though it has covered it from above by a curtain.
 

And He darkened its night and extracted its brightness. meaning in Urdu

اور اُس کی رات ڈھانکی اور اُس کا دن نکالا