The Source of Traditions on Imam al-Riḍā (Vol 2) · Hadith 309 (#Ḥadīth #309)

309 - وَبِإِسْنادِهِ قالَ: قالَ النَّبِيُ صَلَّى اللهُ عَلَيْهِوَآلِهِ: مَن سَبَّ عَلِيّاً، فَقَدْ سَبَّني وَمَن سَبَّني فَقَدْ سَبَّ اللَّه.

31-309 According to the same documentation, the Prophet (S) said, “Whoever swears at Ali has indeed sworn at me, and whoever swears at me has indeed cursed God.”

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