The ruling on one who follows his imam while not hearing his voice

Question:
The Shaykh’s case: What is your opinion regarding a person who prayed with an imam whose voice was weak, and there were other voices disturbing the imam’s voice? Yes. The ma’mum thought in the second rak’ah that the imam had said the taslim, so he continued praying, thinking he was completing the prayer, but in the fourth rak’ah he realized that he had stopped following the imam. Does this ma’mum’s prayer count, or must he repeat the prayer, or should he follow his imam? Certainly. May Allah reward you with good.

Answer:
This person is excused; this person is excused. This is considered a case of excuse. He completes the prayer with his imam. If his imam has already said the taslim, he stands up and performs what he missed of the prayer. If his imam has said the taslim, he stands up and makes up what he missed of the prayer, completing his prayer, and praise be to Allah. If the imam has not said the taslim, he follows him and performs what he missed after the imam’s taslim, because he is excused in the ruling regarding his separation from the imam. The state of not hearing the imam’s voice is considered an excuse for a person; his prayer is valid, and he must complete it, and nothing is required of him, if Allah wills.