The Sufficient (Vol 1) · Hadith 961 (#Ḥadīth #6)
Chapter 85 | The case of those who would claim to be the Imam but is not qualified, the case of those who would reject all or some of the Imams and the case of those who argue in support of one who is not a qualified Imam.
6ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنْ مُحَمَّدِ بْنِ سِنَانٍ عَنْ طَلْحَةَ بْنِ زَيْدٍ عَنْ أَبِي عَبْدِ الله قَالَ مَنْ أَشْرَكَ مَعَ إِمَامٍ إِمَامَتُهُ مِنْ عِنْدِ الله مَنْ لَيْسَتْ إِمَامَتُهُ مِنَ الله كَانَ مُشْرِكاً بِالله.
6. Muhammad ibn Yahya has narrated from Muhammad ibn al-Hussain from Muhammad ibn Sinan from Talha ibn Zayd from abu ‘Abdallah who said: “Whoever associates with an Imam whose Imamah is from Allah, while his Imamah not from Allah, then he is associating partners with Allah.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).