CHAPTER: Praying With Witr Before Sleeping.
Abu Hurairah said: My friend (i. e. the Prophet) instructed me to observe three practices that I do not leave while traveling nor while resident, to pray two rak'ahs in the forenoon, to fast three days every month and not to sleep but after observing the with.
Abu Al-Darda said: My friend (i. e. the Prophet) instructed me to observe three practices which I never leave: he instructed me to fast three days every month, and not to sleep but after observing the with, and to observe supererogatory prayer in the forenoon while traveling and while resident.
Narrated Abu Qatadah: The Prophet صلی اللہ علیہ وسلم asked Abu Bakr: When do you observe the witr? He replied: I observe the witr prayer in the early hours of the night. The Prophet صلی اللہ علیہ وسلم asked Umar: When do you observe the witr? He replied: At the end of the night. He then said to Abu Bakr: This has followed it with care; and he said to Umar: He has followed it with strength.