Narrated As-Saib bin Yazid: In the lifetime of the Prophet, Abu Bakr and `Umar, the Adhan for the Jumua prayer used to be pronounced when the Imam sat on the pulpit. But during the Caliphate of `Uthman when the Muslims increased in number, a third Adhan at Az-Zaura' was added. Abu `Abdullah said, "Az-Zaura' is a place in the market of Medina."

تلتقي أسانيد هذه الأحاديث عند الزهري (ت ١٢٣) — يمر به ٤٨ من ٥١ إسناداً، على ٨ رواة في أعلاها.