The Apostle of Allah ﷺ went to Bani Amr b. 'Auf in order to bring about reconciliation amongst them. The rest of the hadith is the same but with (the addition of these words):" The Messenger of Allah ﷺ came and made his way through the rows till he came to the first row and Abu Bakr retraced his steps."
ذَهَبَ نَبِيُّ اللَّهِ ﷺ يُصْلِحُ بَيْنَ بَنِي عَمْرِو بْنِ عَوْفٍ بِمِثْلِ حَدِيثِهِمْ وَزَادَ فَجَاءَ رَسُولُ اللَّهِ ﷺ فَخَرَقَ الصُّفُوفَ حَتَّى قَامَ عِنْدَ الصَّفِّ الْمُقَدَّمِ وَفِيهِ أَنَّ أَبَا بَكْرٍ رَجَعَ الْقَهْقَرَى