وَبِٱلَّيْلِ ۗ أَفَلَا تَعْقِلُونَ
Wabi a llayli afal a taAAqiloon a and by night. Will you not, then, use your reason?
 - Mohammad Asad
and by night. Will you not use your common sense?
 - Muhammad Farooq-i-Azam Malik
and night. Will you not then understand?
 - Mustafa Khattab
And at night time; have ye then no sense?
 - Marmaduke Pickthall
And by night: will ye not understand?
 - Abdullah Yusuf Ali