If a person prays a prayer without being at rest in it, is it obligatory for him to repeat the prayer?
Machine translationRead the Arabic original
The questioner : Without being at rest? Good. If he does not remain at rest, you must separate yourself from him.
The Shaykh : Yes. Move away from him, move away from him, let him go.
The questioner : How?
The Shaykh : But did this ma'mum, whose imam does not remain at rest, follow his imam and become one who does not remain at rest? I am asking you: did he follow him and pray without being at rest? He must repeat his prayer now, right now, because the Messenger (peace and blessings be upon him) said:Jami` at-Tirmidhi 2692Sahih (Darussalam)
The Shaykh : Yes. Move away from him, move away from him, let him go.
The questioner : How?
The Shaykh : But did this ma'mum, whose imam does not remain at rest, follow his imam and become one who does not remain at rest? I am asking you: did he follow him and pray without being at rest? He must repeat his prayer now, right now, because the Messenger (peace and blessings be upon him) said:
go back and pray for indeed you have not prayed.
ارجع فصل فإنك لم تصل
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 942 - 4600 إذا صلى صلاة لم يطمئن فيها هل يجب عليه إعادة الصلاة؟ ابن عثيمين — youtube.com
The Arabic text is a machine transcription of the audio recording.