حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَبْدَةُ بْنُ سُلَيْمَانَ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتِ اشْتَكَى رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ فَدَخَلَ عَلَيْهِ نَاسٌ مِنْ أَصْحَابِهِ يَعُودُونَهُ فَصَلَّى النَّبِيُّ ـ صلى الله عليه وسلم ـ جَالِسًا فَصَلَّوْا بِصَلاَتِهِ قِيَامًا فَأَشَارَ إِلَيْهِمْ أَنِ اجْلِسُوا فَلَمَّا انْصَرَفَ قَالَ ‏"‏ إِنَّمَا جُعِلَ الإِمَامُ لِيُؤْتَمَّ بِهِ. فَإِذَا رَكَعَ فَارْكَعُوا. وَإِذَا رَفَعَ فَارْفَعُوا. وَإِذَا صَلَّى جَالِسًا فَصَلُّوا جُلُوسًا ‏"‏ ‏.‏

It wasnarrated that Jabir said

“The Messenger of Allah (ﷺ) fellill,and we prayed behind him while he was sitting down, and Abu Bakrwassaying the Takbir so that the people could hear them. He turned tousand saw us standing, so he gestured to us to sit down. When he hadsaid the Salam, he said: ‘You were about to do the action of thePersians and Romans, who remain standing while their kings areseated.Do not do that. Follow the lead of your Imam; if he praysstanding,then pray standing, and if he prays sitting down, then praysittingdown.’”