Doubt regarding the recitation of al-Fatihah behind the imam in a quiet prayer

Question:
Honorable Shaykh! If I am behind an imam in a quiet prayer, and before he bows I doubt whether I recited al-Fatihah or not, and I hesitate until the imam bows, what is required of me?

Answer:
Nothing is required of you, and the imam’s recitation of al-Fatihah is sufficient for him and for the ma’mum, and praise be to Allah. But if the ma’mum recites it, that is longer and more complete. And if he does not recite it, the imam’s recitation is sufficient. This is the correct position that benefits people. Yes, Abu Bakr came to the Messenger (peace and blessings be upon him) and bowed with him and stood up in the rak’ah, so the Prophet (peace and blessings be upon him) did not order him to make up the rak’ah, and he did not do that.