Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tabarani:7952 – al-Ḥusayn b. Isḥāq al-Tustarī > Sahl b. ʿUthmān > Marwān b. Muʿāwiyah > Jaʿfar b. al-Zubayr > al-Qāsim > Abū Umāmah

[Machine] The Messenger of Allah ﷺ said, "Jumu'ah (Friday prayer) is obligatory upon fifty men, and it is not obligatory for less than fifty men."  

الطبراني:٧٩٥٢ – حَدَّثَنَا الْحُسَيْنُ بْنُ إِسْحَاقَ التُّسْتَرِيُّ ثنا سَهْلُ بْنُ عُثْمَانَ ثنا مَرْوَانُ بْنُ مُعَاوِيَةَ عَنْ جَعْفَرِ بْنِ الزُّبَيْرِ عَنِ الْقَاسِمِ عَنْ أَبِي أُمَامَةَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «الْجُمُعَةُ عَلَى الْخَمْسِينَ رَجُلًا وَلَيْسَ عَلَى مَا دُونَ الْخَمْسِينَ جُمُعَةٌ»  

See similar narrations below:

Collected by Suyūṭī