Standing up for a third unit in a voluntary prayer while in a state of forgetfulness

Question:
And if the prayer is in the first unit, meaning, for example, he is in the first, but originally the addition is after the second rest, and he stands up for the third, should he not stand up and complete it, and he should be humble, then prostrate for forgetfulness, or should he abandon the third and then prostrate for forgetfulness?

Answer:
This is not permissible in the night prayer, due to the saying of the Messenger of Allah (peace and blessings be upon him) , so it is not permissible to add more than two units. If he stands up for a third unit, he must return. They say it is like one who stands up for a third unit in the Fajr prayer; he must return, because the night prayer is performed in pairs of two. As for the daytime prayer, if a person is performing voluntary prayer during the day and forgets and stands up for a third unit, they say he has a choice: if he wishes, he sits and prostrates for forgetfulness, and if he wishes, he completes it as four units, because it is permissible to perform voluntary prayer during the day in four units. As for the night, it is not permissible to perform voluntary prayer in it except in pairs of two, as he (peace and blessings be upon him) said.
If he prayed one unit in the Tarawih prayer and was reminded after he had said the closing salam, he stands up and performs the second unit and prostrates for forgetfulness. Yes.