The Rewards & Punishments of Deeds · Hadith 803 (#Ḥadīth #12)
Chapter 9 | Punishment of enmity with Amirul Momineen and denying or doubting his Wilayat
وَ بِهَذَا الْإِسْنَادِ عَنْ مُحَمَّدِ بْنِ جَعْفَرٍ عَنْ أَبِیهِ ع قَالَ: عَلِیٌّ بَابُ الْهُدَی مَنْ خَالَفَهُ کَانَ کَافِراً وَ مَنْ أَنْکَرَهُ دَخَلَ النَّارَ.
12. And from the previous chain from Muhammad b. Ja’far from his father who said: “Ali is the door of guidance. Those who oppose him are infidels and his deniers are destined to Hell.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).