[Machine] The Prophet ﷺ said, "Whoever catches a rak'ah (unit of prayer) of Jumu'ah (Friday prayer), let him pray another rak'ah with it." All of these three chains of narration are authentic according to the conditions of the two sheikhs (referring to Bukhari and Muslim), and they did not exclude it with this wording. Rather, they agreed upon the hadith of Az-Zuhri from Abu Salamah from Abu Hurairah that the Prophet ﷺ said, "Whoever catches a rak'ah of the prayer, and whoever catches a rak'ah of Asr prayer." And Muslim included it with the addition, so whoever catches all of them, has indeed caught them all.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «مَنْ أَدْرَكَ مِنَ الْجُمُعَةِ رَكْعَةً فَلْيُصَلِّ إِلَيْهَا أُخْرَى» كُلُّ هَؤُلَاءِ الْأَسَانِيدِ الثَّلَاثَةِ صِحَاحٌ عَلَى شَرْطِ الشَّيْخَيْنِ وَلَمْ يُخَرِّجَاهُ بِهَذَا اللَّفْظِ إِنَّمَا اتَّفَقَا عَلَى حَدِيثِ الزُّهْرِيِّ عَنْ أَبِي سَلَمَةَ عَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «مَنْ أَدْرَكَ مِنَ الصَّلَاةِ رَكْعَةً وَمَنْ أَدْرَكَ مِنَ صَلَاةِ الْعَصْرِ رَكْعَةً» وَلِمُسْلِمٍ فِيهِ الزِّيَادَةُ فَقَدْ أَدْرَكَهَا كُلَّهَا فَقَطْ