How does one make up the Witr prayer if it is missed?

Question : May Allah bless you. This man prays eleven rak'ahs in his night prayer, and when he finished the eighth, the mu'adhdhin called for the Fajr prayer. His usual Witr is three rak'ahs. So regarding the Witr, what should he do during the day? Does he pray four?

Answer : Yes. If a person misses the Witr, he prays it during the day as an even number. If he usually prays Witr with three, he prays four; if he prays Witr with five, he prays six. This is why the Prophet (peace and blessings be upon him), when sleep or pain overtook him at night, would pray twenty rak'ahs during the day to make up for what he was accustomed to in his night prayer, but it would not be Witr, because the time for Witr had passed. Witr is the closing of the night prayer, and since that time has passed, he combines the two matters: the prayer he was accustomed to and the omission of Witr, because its time has passed.