The Ruling on Following the Imam in an Addition
Machine translationRead the Arabic original
Question:
May Allah reward you. Honorable Shaykh, the questioner says: What is the ruling for the ma'mum (one praying behind the imam) when the imam adds to some of the rak'ahs? What is obligatory for him?
Answer:
If he knows that it is an addition, it is not permissible for him to follow him. Rather, he should remain sitting if he wishes to recite the final tashahhud and perform the taslim for himself, or if he wishes, he should wait until the imam performs the taslim and then perform the taslim with him. He should not follow him while knowing that it is an addition, for his prayer would be invalidated. If he follows him while knowing that it is an addition, his prayer is invalid. Yes.
May Allah reward you. Honorable Shaykh, the questioner says: What is the ruling for the ma'mum (one praying behind the imam) when the imam adds to some of the rak'ahs? What is obligatory for him?
Answer:
If he knows that it is an addition, it is not permissible for him to follow him. Rather, he should remain sitting if he wishes to recite the final tashahhud and perform the taslim for himself, or if he wishes, he should wait until the imam performs the taslim and then perform the taslim with him. He should not follow him while knowing that it is an addition, for his prayer would be invalidated. If he follows him while knowing that it is an addition, his prayer is invalid. Yes.
Source
نور على الدرب - الفوزان - 03/014 — archive.org (16:12)
The Arabic text is a machine transcription of the audio recording.