Sayyiduna Abu Umamah (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "The Friday prayer is obligatory upon fifty men; if there are fewer than fifty, the Friday prayer is not obligatory."
Imam al-Tabarani recorded this narration in al-Mu'jam al-Kabir. Its chain contains a narrator, Ja'far bin al-Zubayr, the student of al-Qasim, and he is extremely da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 3077
Hadith Gradingمحدثین:إسنادہ ضعیف جداً
Hadith Takhrij«أخرجه المعجم الكبير للطبراني برقم: 7952»