The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 401 (#Ḥadīth #11)
Chapter 5 | On What Ar-Ridha Wrote for Al-Ma’mun Regarding Pure Islam and the Religious Decrees
11 - حَدَّثَنا مُحَمَّدِ بْنِ أَحْمَدِ بْنِ الحُسَيْنِ بْنِ يُوسِفالبَغدْادي قالَ حَدَّثَني الحُسَيْنِ بْنِالفَضْلِ إِمام جامِع أهواز قالَ: حَدَّثَنا بَكْرِ بْنِ أَحْمَدِ بْنِ مُحَمَّدِ بْنِ إِبْراهيم القصري غُلام الخليل المحلمي قالَ: حَدَّثَنا الحَسَن بْنِ عَلِى، عَن مُحَمَّدِ بْنِ عَلِىِّ بْنِ مُوسَى، عَن عَلِىِّ بْنِ مُوسَى موسَى بْنِ جَعْفَرِ بْنِ مُحَمَّد a.sُ قالَ لا يَكُون الْقائِم إِلاّ إِمام بْنِ إِمام وَوَصِيُّ بْنِ وَصِيُّ.
35-11 Muhammad ibn Ahmad ibn Al-Husayn ibn Yusuf al-Baghdadi narrated that Abul Hassan Ahmad ibn Al-Fadhl - the congregational prayer leader of (the city of) Ahwaz quoted on the authority of Bakr ibn Ahmad ibn Muhammad ibn Ibrahim al-Qasri - the servant of al-Khalil al-Mahlami who quoted on the authority of Al-Hassan ibn Ali ibn Muhammad ibn Ali ibn Musa , on the authority of Ali ibn Musa (ar-Ridha’) , on the authority of his father Musa ibn Ja’far ibn Muhammad (al-Kadhim) , “The Riser will be none but an Imam - the son of an Imam and a Trustee - the son of a Trustee.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).