The ruling on the prayer of one who led the people in five rak'ahs in a four-rak'ah prayer
Machine translationRead the Arabic original
Question:
He says: A brother prayed five rak'ahs with us in a four-rak'ah prayer, and the ma'mum (those praying behind the imam) prayed with him. What is the ruling on the prayer in such a case?
Answer:
If one knows that it is an extra, it invalidates his prayer. As for one who is in doubt about an extra, it does not invalidate his prayer, but it is obligatory for the imam and all the followers to perform the prostration for forgetfulness. Yes.
The presenter:
May Allah reward you
He says: A brother prayed five rak'ahs with us in a four-rak'ah prayer, and the ma'mum (those praying behind the imam) prayed with him. What is the ruling on the prayer in such a case?
Answer:
If one knows that it is an extra, it invalidates his prayer. As for one who is in doubt about an extra, it does not invalidate his prayer, but it is obligatory for the imam and all the followers to perform the prostration for forgetfulness. Yes.
The presenter:
May Allah reward you
Source
نور على الدرب - الفوزان - 03/227 — archive.org (9:45)
The Arabic text is a machine transcription of the audio recording.