The Book of Divine Unity · Hadith 561 (#Ḥadīth #21)
Chapter 67 | The Prohibition of Discussing, Debating, and Arguing about Allah
21 - أبي رضي الله عنه، قال: حدثنا أحمد بن إدريس، عن محمد بن أحمد، عن علي بن السندي، عن حماد بن عيسى، عن الحسين بن المختار، عن أبي بصير عن أبي جعفر عليه السلام، قال: سمعته يقول: الخصومة تمحق الدين وتحبط العمل وتورث الشك.
21. My father said: Ahmad ibn Idris said, on the authority of Muhammad ibn Ahmad, on the authority of `Ali ibn al-Sindi, on the authority of Hammad ibn `Isa, on the authority of alHusayn ibn al-Mukhtar, on the authority of Abu Basir, that Abu Ja`far al-Baqir said: I heard him saying that, “Quarrelling destroys religion, puts an end to good deeds, and leaves nothing but doubt as its heir.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).