Translation of the verse 2 from Surah Ad-duha : Number of verses 11 - - page 596 - Part 30.
And by the night when it is still (or darkens);
And [by] the night when it covers with darkness,
(93:2) and by the night when it covers the world with peace: *2
*2) The word raja in the original does not only signify the spreading of darkness but it also contains the meaning of stillness and peace that prevails at night. This quality of night deeply relates to the theme that follows.
Source : Ad-duha Verse 2: And [by] the night when it covers with darkness,