I stood up after the imam had said the closing salam of the prayer, and then he performed the prostration for forgetfulness after the salam. What should I do?
Machine translationRead the Arabic original
The questioner:
Honorable Shaykh, may Allah grant you success. He says: I prayed with an imam and I missed a unit of the prayer. I prayed with an imam and I missed a unit of the prayer. When he sat for the final tashahhud, the imam said the salam, and then he performed the prostration for forgetfulness after the salam. He asks: What should I do?
The Shaykh:
Or you should stand up to complete your prayer so that you prostrate with the imam; you follow the imam. Yes.
The questioner:
Then he says, may Allah preserve you: If I stand up, do I go back?
The Shaykh:
If you did not lean on something while standing, go back. But if you leaned on something while standing, do not continue. Yes.
Honorable Shaykh, may Allah grant you success. He says: I prayed with an imam and I missed a unit of the prayer. I prayed with an imam and I missed a unit of the prayer. When he sat for the final tashahhud, the imam said the salam, and then he performed the prostration for forgetfulness after the salam. He asks: What should I do?
The Shaykh:
Or you should stand up to complete your prayer so that you prostrate with the imam; you follow the imam. Yes.
The questioner:
Then he says, may Allah preserve you: If I stand up, do I go back?
The Shaykh:
If you did not lean on something while standing, go back. But if you leaned on something while standing, do not continue. Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، [672 -3022] قمت بعد أن سلم الإمام من صلاته فأتى بسجود السهو بعد السلام فماذا أفعل؟ — youtube.com
The Arabic text is a machine transcription of the audio recording.