The ruling on the prayer of the ma'mum (one praying behind the imam) if he follows his imam in an addition
Machine translationRead the Arabic original
Question:
The questioner says: Honorable Shaykh, may Allah grant you success, if the imam makes a mistake in the prayer and adds a rak'ah, and the ma'mum follows him while being certain that he added it, is the ma'mum's prayer valid, or does he have to repeat his prayer?
Answer:
If he is unaware of the ruling, knowing that it is an addition but not knowing the legal ruling, then it does not invalidate it; his prayer is valid. However, if he knows that it is an addition and knows the legal ruling that it is not permissible for him to follow in it, then it invalidates his prayer because he intentionally committed the addition. They may say that the prayer of the one who followed knowingly is invalid, not the one who followed unknowingly. Yes.
The questioner says: Honorable Shaykh, may Allah grant you success, if the imam makes a mistake in the prayer and adds a rak'ah, and the ma'mum follows him while being certain that he added it, is the ma'mum's prayer valid, or does he have to repeat his prayer?
Answer:
If he is unaware of the ruling, knowing that it is an addition but not knowing the legal ruling, then it does not invalidate it; his prayer is valid. However, if he knows that it is an addition and knows the legal ruling that it is not permissible for him to follow in it, then it invalidates his prayer because he intentionally committed the addition. They may say that the prayer of the one who followed knowingly is invalid, not the one who followed unknowingly. Yes.
Source
سهو الإمام في الصلاة بزيادة ركعة ومتابعة المأموم له — alfawzan.live
The Arabic text is a machine transcription of the audio recording.