"I heard the Messenger of Allah ﷺ on the minbar, when he was asked about prayers at night, say: "Two by two, then if you fear that dawn will come, pray witr with one rak'ah.'"
سَمِعْتُ رَسُولَ اللَّهِ ﷺ عَلَى الْمِنْبَرِ يُسْأَلُ عَنْ صَلاَةِ اللَّيْلِ فَقَالَ مَثْنَى مَثْنَى فَإِذَا خِفْتَ الصُّبْحَ فَأَوْتِرْ بِرَكْعَةٍ