[Machine] The Messenger of Allah, ﷺ , said that Friday prayer is obligatory for every village that has an imam, even if there are only four people. Then the Prophet, ﷺ , mentioned three individuals: Al-Hakam bin Abdullah, who is abandoned; Muawiya bin Yahya, who is weak; and this is not confirmed by Al-Zuhri. It has been narrated in this context a hadith about the fifty (people), but its chain of narration is not authentic, and it is mentioned by Al-Zuhri that Mus'ab bin Umair, when the Prophet, ﷺ , sent him to Medina, he gathered them and they were twelve men.  

قَالَ رَسُولُ اللهِ ﷺ الْجُمُعَةُ وَاجِبَةٌ عَلَى كُلِّ قَرْيَةٍ فِيهَا إِمَامٌ وَإِنْ لَمْ يَكُونُوا إِلَّا أَرْبَعَةً حَتَّى ذَكَرَ النَّبِيُّ ﷺ ثَلَاثَةً الْحَكَمُ بْنُ عَبْدِ اللهِ مَتْرُوكٌ وَمُعَاوِيَةُ بْنُ يَحْيَى ضَعِيفٌ وَلَا يَصِحُّ هَذَا عَنِ الزُّهْرِيِّ وَقَدْ رُوِيَ فِي هَذَا الْبَابِ حَدِيثٌ فِي الْخَمْسِينَ لَا يَصِحُّ إِسْنَادُهُ وَيُذْكَرُ عَنِ الزُّهْرِيِّ أَنَّ مُصْعَبَ بْنَ عُمَيْرٍ حِينَ بَعَثَهُ النَّبِيُّ ﷺ إِلَى الْمَدِينَةِ جَمَّعَ بِهِمْ وَهُمُ اثْنَا عَشَرَ رَجُلًا