Thauban reported the Prophet as saying, “This wakefulness is a toil and a burden, so when one of you observes a witr he should pray two rak'as. If he gets up during the night, well and good; otherwise they will serve for him."
‘A’isha said that God’s Messenger used to observe a witr with one rak'a, then he performed two rak'as reciting the Qur’an in the course of them seated. When he wished to bow, he stood up and bowed.
Abu Umama said the Prophet used to pray the two of them after the witr seated, and recited in the course of them, “When the earth is shaken’’, 1 and "Say, O infidels."2