It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with him) that when he was asked about Witr, he would say: As far as I am concerned, if I perform Witr before sleeping, but then intend to pray at night, I perform one rak‘ah to make the previous Witr even, then I continue to pray two rak‘ahs at a time, and when I have completed the desired prayers, I perform one Witr at the end, because the Messenger of Allah (peace and blessings be upon him) commanded that Witr should be made the last prayer of the night.