If the ma'mum forgets in his prayer, is sujud al-sahw obligatory upon him?

Question:
May Allah reward you. This is the last question. The questioner asks: If the ma'mum forgets in his prayer, does he perform sujud al-sahw, or what? And if it was a pillar, does he perform the pillar?

Answer:
If the ma'mum who caught the prayer with the imam from the beginning forgets, he does not have to perform sujud al-sahw, as the imam bears it for him. However, if he joined during the prayer and forgot, he performs sujud al-sahw after he completes his prayer, after he completes his prayer. Sujud al-sahw does not suffice for a pillar, it does not suffice for a pillar; rather, it is for leaving an obligatory act due to forgetfulness. As for a pillar, if it is possible to perform it, he performs it in its place; otherwise, it is like leaving a complete rak'ah. Yes.