Sayyiduna Abu Ayyub Ansari (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said to me: "Pray five rak‘ahs of Witr, if you do not have the strength for that then pray three rak‘ahs, if you do not have the strength for that then pray one rak‘ah, and if you do not have the strength for that then pray with gestures."