A person slept after the first prostration and did not realize it until the imam said the closing salam; what is obligatory for him?

Question:
May Allah reward you, Your Eminence, father. The questioner says: I prayed the Fajr prayer in congregation today. When the imam stood up from the first prostration in the second rak'ah, I stood up with him. When he prostrated for the second prostration, I did not prostrate with him because I had fallen asleep. I did not become aware of myself until the imam was saying the closing salam. What is required of me?

Answer:
It is obligatory for you to prostrate, perform the final tashahhud, and say the closing salam, even if it is after the imam; there is no harm in that. When you woke up, you prostrated for the second prostration, performed the final tashahhud, and said the closing salam, and your prayer is valid, and praise be to Allah. However, if you did not do this, you must repeat the prayer. Yes.