Su'alat al-Bardha'i : wa-huwa kita al-du'afa' wa-al-kadhdhabin wa-al-matrukin, wa-ma'ahu kitab Asami al-Du'afa' - Abu Zur'ah al-Razi,'Ubayd Allah ibn'Abd al-Karim, ca. 815-878; al-Azhari, Abu'Umar Muhammad ibn'Ali; Abu Zur'ah al-Razi,'Ubayd Allah ibn'Abd al-Karim, ca. 815-878. (al-Qahirah : al-Faruq al-Hadithiyah, 2009)
Keywords: Hadith -- Authorities -- Early works to 1800