ʿUyūn akhbār al-Riḍā 1, narration 51

Translation

6-9 Abu Ali Ahmad ibn Al-Hassan al-Qattan narrated that Abu Abdullah Ahmad ibn Muhammad ibn Ibrahim ibn Abil Rajal al-Baghdadi quoted on the authority of Muhammad ibn Ubdoos al-Harrani, on the authority of Abdul Ghaffar ibn al-Hakam, on the authority of Mansoor ibn Abil Aswad, on the authority of al-Muttraf, on the authority of al-Sha’bi, on the authority of his uncle Qays ibn Abdullah, “We were sitting around and Abdullah ibn Mas’ood was also present. A Bedouin came and asked, ‘Which one of you is Abdullah ibn Mas’ood?’ Abdullah said, ‘I am Abdullah ibn Mas’ood.’ The Bedouin asked, ‘Has your Prophet told you how many successors he will have after him?’ He replied, ‘Yes. Twelve successors - as many as the Israelite chiefs.’”

Translation: Dr. Ali Peiravi — published with the edition, reproduced verbatim.