وعن ابن عمر رضي الله عنهما
أن النبي صلى الله عليه وسلم، قال: «صلاة الليل مثنى مثنى، فإذا خفت الصبح فأوتر بواحدة»
The Prophet (sallallahu alayhi wa sallam) said, “Salat during the night should consist of pairs of but if you fear that morning is near, then pray one Rakah as Witr.”.
Riyad as-Salihin 1168, Book 9, The Book of Virtues, Hadith 178. 1 min read