The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 481 (#Ḥadīth #12)

12 - حَدَّثَنا أَبي رَضِىَ اللهُ عَنْهُ قالَ: حَدَّثَنا سَعْدِ بْنِعَبْدِ اللَّه عَنْ مُحَمَّدِ بْنِ عِيسَى بْنِ عُبِيْد عَنْ بشار قالَ: قالَ الرِّضا a.sُ إِنَّ عَبْدَ اللَّهِ يَقْتُلُ مُحَمَّداً فَقُلْتُ لَهُ وَعَبْدُاللَّهِ بْنُ هَارُونَ يَقْتُلُ مُحَمَّدَ بْنَ هَارُونَ فَقَالَ لِي: نَعَمْ عَبْدُ اللَّهِ الَّذِي بِخُرَاسَانَ يَقْتُلُ مُحَمَّدَ بْنَ زُبَيْدَةَ الَّذِي هُوَ بِبَغْدَادَ فَقَتَلَه.

47-12 (The author of the book narrated) my father - may God be pleased with him - narrated that Sa’d ibn Abdullah quoted on the authority of Muhammad ibn Isa ibn Obayd, on the authority of Al-Husayn ibn Bashshar, “Ar-Ridha’ said, ‘Abdullah will kill Muhammad.’ I asked, ‘Will Abdullah ibn Harun kill Muhammad ibn Harun?’ Ar-Ridha’ said, ‘Yes. Now Abdullah who is in Khorasan will kill Muhammad ibn Zobayda who is in Baghdad.’ In fact, Al-Ma’mun killed Al-Amin.”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).