The ruling on the prostration for forgetfulness for leaving an obligatory act of the prayer

Question:
Honorable Shaykh, is it obligatory for the imam or the ma'mum to perform the prostration for forgetfulness if he forgets one of the obligatory acts of the prayer? For example, saying "My Lord, forgive me" between the two prostrations,

Answer:
Yes, the prostration for leaving an obligatory act is obligatory, because it is a safeguard for the prayer if it is left. Saying "My Lord, forgive me," or "Glory be to my Lord, the Most High" in the prostration, or "My Lord, the Great" in the bowing, or saying "Allah hears the one who praises Him," in which case one prostrates for forgetfulness, whether he is an imam or a ma'mum. However, if he is a ma'mum and he was with the imam from the beginning of the prayer and he left an obligatory act behind the imam, then the imam bears the prostration for forgetfulness on his behalf. Yes. And Allah the Exalted knows best, and may Allah send prayers and peace upon our Prophet Muhammad.