If the ma'mum (one praying behind the imam) repeats al-Fatihah (Surat al-Fatihah) intentionally or by mistake, is he required to do anything if we hold that reciting it is a pillar for the ma'mum?

Question:
If the ma'mum repeats al-Fatihah (Surat al-Fatihah) intentionally or by mistake, is he required to do anything if we hold that reciting it is a pillar for the ma'mum? Please give us a ruling, may Allah reward you with good.

Answer:
Reciting Surat al-Fatihah is a pillar of the ritual prayer, but it is recited only once and not repeated. It is not permissible to repeat it, because this is a bid'ah (religious innovation) and contradicts the practice of the Prophet (peace and blessings be upon him). His Companions did not repeat Surat al-Fatihah. Therefore, it is obligatory to avoid this. It is sufficient to recite it once, and then recite whatever is easy of the Qur'an in the first two rak'ahs of a four-rak'ah prayer and in the Fajr (dawn) prayer. This is the recommended practice. As for the last two rak'ahs of a four-rak'ah prayer or of the Maghrib (sunset) prayer, one restricts oneself to reciting Surat al-Fatihah. This is the Sunnah (recommended practice). Yes.