Rulings Concerning the Masbuq Following the Imam in the Prostration for Forgetfulness

Question:
May Allah reward you. This brother, the questioner Abu Ahmad, says: Regarding sujud al-sahw (the prostration for forgetfulness) in the case of an addition, when the imam says the closing salam, they stand up to make up the missed prayer, and then the imam prostrates for forgetfulness, following what is stated in this verified booklet that I read. Here, the common people who are making up their prayer ask the imam, “Why are you prostrating while we are making up our prayer?” What is the appropriate response to that?

Answer:
There is a distinction in this issue. If the imam prostrates for forgetfulness before the masbuq (one who joins the prayer late) stands up, it is obligatory for him to prostrate with him and follow him. However, if he has already stood up and is standing, and then the imam prostrates, he does not return to prostrate but continues to make up what he missed. Yes.