"The Prophet was in front of Abu Bakr and he prayed sitting down, and Abu Bakr was leading the people in prayer, and the people were behind Abu Bakr."  

أَنَّ رَسُولَ اللَّهِ ﷺ أَمَرَ أَبَا بَكْرٍ أَنْ يُصَلِّيَ بِالنَّاسِ قَالَتْ وَكَانَ النَّبِيُّ ﷺ بَيْنَ يَدَىْ أَبِي بَكْرٍ فَصَلَّى قَاعِدًا وَأَبُو بَكْرٍ يُصَلِّي بِالنَّاسِ وَالنَّاسُ خَلْفَ أَبِي بَكْرٍ  

[Machine] The Messenger of Allah ﷺ commanded Abu Bakr to lead the people in prayer during his illness in which he eventually died. So, the Messenger of Allah ﷺ was in front of Abu Bakr, leading the people in prayer while sitting, and Abu Bakr was leading the people in prayer and the people were behind him.  

أَنَّ رَسُولَ اللهِ ﷺ أَمَرَ أَبَا بَكْرٍ أَنْ يُصَلِّيَ بِالنَّاسِ فِي مَرَضِهِ الَّذِي مَاتَ فِيهِ فَكَانَ رَسُولُ اللهِ ﷺ بَيْنَ يَدَيْ أَبِي بَكْرٍ يُصَلِّي بِالنَّاسِ قَاعِدًا وَأَبُو بَكْرٍ يُصَلِّي بِالنَّاسِ وَالنَّاسُ خَلْفَهُ