Is the ma'mum required to follow the imam in a matter that is in addition to the prayer of the ma'mum?

The questioner : That the ma'mum is required to follow the imam in a matter that is in addition to the prayer of the ma'mum. Does it have a parallel? So that we can say that the athar and reasoning, or qiyas, indicate it.

The Shaykh : Yes, it has a parallel, in that sujud al-sahw is obligatory and not a surplus, and the ma'mum leaves the obligatory act for the sake of following the imam. No, this is a parallel in that he does not prostrate when sujud al-sahw becomes obligatory upon him, which is what you are saying, but a parallel in that he adds to his prayer.

The questioner : That the ma'mum, when he enters the second rak'ah, it will be the first for him, so he sits with the imam while the ma'mum watches.

The Shaykh : In a place other than the place of sitting, so here he is required to sit even though this is not a place of sitting for him, for the sake of following the imam. So now we have evidence that he prostrates when the imam prostrates, and evidence that he does not prostrate if he did not miss anything. The evidence is his saying (peace and blessings be upon him): "The imam was made to be followed." As for qiyas, it differs.