The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 273 (#Ḥadīth #273)
Chapter 1 | Traditions about Ar-Ridha
273 - وَبِإِسْنادِهِ عَنْ عَلِيِ a.sُ قالَ: قالَالنَّبِيُ صَلَّى اللهُ عَلَيْهِ وَآلِهِ: الأَئِمَّةُ مِن قُرَيْشٍ.
31-273 According to the same documentation, on the authority of Ali , the Prophet (S) said, “The Imams are all going to be from the Quraysh (tribe).”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).