The Ruling on Making Up the Even and Odd Units and Standing in Night Prayer

Question:
Honorable Shaykh, a person who is accustomed to standing in night prayer with ten rak'ahs, but does not wake up until there is only enough time for the even and odd units, and he performs them, does he make up the rest of the night, even though he prayed the even and odd units?

Answer:
He does not make up the even and odd units. As for standing in night prayer, if he wants to make it up, he makes up whatever remains of it. However, the even and odd units were performed in their proper time, so he does not make them up. If he wants to make up the standing in night prayer that was before the even and odd units, there is nothing wrong with that.