وَٱلَّيْلِ إِذَا يَغْشَىٰهَا
Wa a llayli i tha yaghsh a h a and the night as it veils it darkly!
 - Mohammad Asad
by the night, which draws a veil over it;
 - Muhammad Farooq-i-Azam Malik
and the night as it conceals it!
 - Mustafa Khattab
And the night when it enshroudeth him,
 - Marmaduke Pickthall
By the Night as it conceals it;
 - Abdullah Yusuf Ali