Witr is a confirmed Sunnah and its minimum Rak`ahs are one. There is no maximum number of Rak`ahs for Witr. The Prophet (peace be upon him) often used to pray Witr with eleven Rak`ahs. It is better for a Muslim to adhere to this act of worship even in the least number tolerated. If a person is active, he may increase the number of Rak`ahs, for it is better for him.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.