Excellence and Secrets Of The Night Vigil Volume I Picture Oil lamp ...

Aisha r.a. narrated that the Prophet s.a.w prayer thirteen raka'ahs of the
night prayer [tahajjud] and that included the Witr and two raka'ahs
supererogatory [Sunnah] of the Fajr prayer. Sahih al-Bukhari
It was narrated that Aisha r.a said that “Allah’s Messenger s.a.w never
exceeded eleven raka'ahs even in Ramadan or in other months; he used
to offer four raka'ahs, do not ask me about their beauty and length, then
four raka'ahs, do not ask me about their beauty and length, and then
three raka'ahs.”
Aisha r.a. further said, “I said, ‘O Messenger of Allah! Do you sleep
before offering the witr prayer?’ He s.a.w replied, ‘O Aisha! My eyes
sleep but my heart remains awake.’”
Sahih al-Bukhari
Aisha, Ummul Mu'minin narrated that the Prophet s.a.w said: “Any
person who offers prayer at night regularly but (on a certain night) he is
overwhelmed by sleep will be given the reward of praying. His sleep
will be almsgiving.”
AbuDawud
AbuJamrah r.a. narrated that “I asked A'idh ibn Amr, (who was one of
the companions of the Prophet s.a.w. and one of those who gave the
Pledge of allegiance to the Prophet s.a.w beneath the Tree): “Can the
Witr prayer be repeated (in one night)?” A’idh ibn Amr said that he
s.a.w. said, “If you have offered it in the first part of the night, you
should not repeat it in the last part of the night.” Sahih al-Bukhari
Abdullah ibn Umar narrated that Allah’s Messenger s.a.w said: “Witr is
a raka'ah at the end of the prayer”.
Sahih Muslim
LR 39 - Chapter 3