Doubting that one has recited Surah Al-Fatihah during Salah

Q 5: If I doubt that I have read Al-Fatihah, should I repeat it? A: If you are a Ma’mum (a person being led by an Imam in Prayer) and you doubt whether you have recited Al-Fatihah or not, you do not have to repeat Salah (Prayer), as the Imam (the one who leads congregational Prayer) recites it on your behalf. (Part No. 5; Page No. 323

A: If you are a Ma’mum (a person being led by an Imam in Prayer) and you doubt whether you have recited Al-Fatihah or not, you do not have to repeat Salah (Prayer), as the Imam (the one who leads congregational Prayer) recites it on your behalf. (Part No. 5; Page No. 323) However, if you are the Imam or you offer Salah alone, and you doubt whether you have recited Al-Fatihah or not, you should recite it if you remember it before Ruku‘ (bowing). If you remember this after having performed Ruku‘ in the Rak‘ah (unit of Prayer) in which you doubted whether you recited Al-Fatihah, you should consider this Rak‘ah cancelled and offer another one instead of it, then continue your Salah and perform Sujud-ul-Sahw (Prostration of Forgetfulness) at the end. If you remember this close to Taslim (salutation of peace ending the Prayer), you should repeat the Rak‘ah in which you doubted whether you recited Al-Fatihah, and the Rak‘ah after it will count in its place, and then perform Sujud-ul-Sahw and offer Taslim. If you remember this after Taslim, and there is a long intervening period, you should repeat the whole Salah, due to lengthy interruption, because reciting Al-Fatihah is one of the pillars of Salah, without which it is considered invalid.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.