There was some quarrel (sighting) among Bani ʿAmr, and when this news reached the Prophet, he offered the Zuhr prayer and went to establish peace among them. In the meantime the time of ʿAsr prayer was due, Bilal pronounced the Adhan and then the Iqama for the prayer and requested Abu Bakr (to lead the prayer) and Abu Bakr went forward. The Prophet ﷺ arrived while Abu Bakr was still praying. He entered the rows of praying people till he stood behind Abu Bakr in the (first) row. The people started clapping, and it was the habit of Abu Bakr that whenever he stood for prayer, he never glanced side-ways till he had finished it, but when Abu Bakr observed that the clapping was not coming to an end, he looked and saw the Prophet ﷺ standing behind him. The Prophet ﷺ beckoned him to carry on by waving his hand. Abu Bakr stood there for a while, thanking Allah for the saying of the Prophet ﷺ and then he retreated, taking his steps backwards. When the Prophet saw that, he went ahead and led the people in prayer. When he finished the prayer, he said, "O Abu Bakr! What prevented you from carrying on with the prayer after I beckoned you to do so?" Abu Bakr replied, "It does not befit the son of Abi Quhafa to lead the Prophet ﷺ in prayer." Then the Prophet ﷺ said to the people, "If some problem arises during prayers, then the men should say, Subhan Allah!; and the women should clap." (See Hadith No. 652, Vol. 1)  

كَانَ قِتَالٌ بَيْنَ بَنِي عَمْرٍو فَبَلَغَ ذَلِكَ النَّبِيَّ ﷺ فَصَلَّى الظُّهْرَ ثُمَّ أَتَاهُمْ يُصْلِحُ بَيْنَهُمْ فَلَمَّا حَضَرَتْ صَلاَةُ الْعَصْرِ فَأَذَّنَ بِلاَلٌ وَأَقَامَ وَأَمَرَ أَبَا بَكْرٍ فَتَقَدَّمَ وَجَاءَ النَّبِيُّ ﷺ وَأَبُو بَكْرٍ فِي الصَّلاَةِ فَشَقَّ النَّاسَ حَتَّى قَامَ خَلْفَ أَبِي بَكْرٍ فَتَقَدَّمَ فِي الصَّفِّ الَّذِي يَلِيهِ قَالَ وَصَفَّحَ الْقَوْمُ وَكَانَ أَبُو بَكْرٍ إِذَا دَخَلَ فِي الصَّلاَةِ لَمْ يَلْتَفِتْ حَتَّى يَفْرُغَ فَلَمَّا رَأَى التَّصْفِيحَ لاَ يُمْسَكُ عَلَيْهِ الْتَفَتَ فَرَأَى النَّبِيَّ ﷺ خَلْفَهُ فَأَوْمَأَ إِلَيْهِ النَّبِيُّ ﷺ أَنِ امْضِهْ وَأَوْمَأَ بِيَدِهِ هَكَذَا وَلَبِثَ أَبُو بَكْرٍ هُنَيَّةً يَحْمَدُ اللَّهَ عَلَى قَوْلِ النَّبِيِّ ﷺ ثُمَّ مَشَى الْقَهْقَرَى فَلَمَّا رَأَى النَّبِيُّ ﷺ ذَلِكَ تَقَدَّمَ فَصَلَّى النَّبِيُّ ﷺ بِالنَّاسِ فَلَمَّا قَضَى صَلاَتَهُ قَالَ يَا أَبَا بَكْرٍ مَا مَنَعَكَ إِذْ أَوْمَأْتُ إِلَيْكَ أَنْ لاَ تَكُونَ مَضَيْتَ قَالَ لَمْ يَكُنْ لاِبْنِ أَبِي قُحَافَةَ أَنْ يَؤُمَّ النَّبِيَّ ﷺ وَقَالَ لِلْقَوْمِ إِذَا نَابَكُمْ أَمْرٌ فَلْيُسَبِّحِ الرِّجَالُ وَلْيُصَفِّحِ النِّسَاءُ