The Sufficient (Vol 2) · Hadith 608 (#Ḥadīth #4)
Chapter 75 | The Rights of a Believer on his Brother (in belief) and his duty to observe Such Rights
4ـ عَنْهُ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ الْحَسَنِ بْنِ مَحْبُوبٍ عَنْ جَمِيلٍ عَنْ مُرَازِمٍ عَنْ أَبِي عَبْدِ الله (عَلَيهِ السَّلام) قَالَ مَا عُبِدَ الله بِشَيْءٍ أَفْضَلَ مِنْ أَدَاءِ حَقِّ الْمُؤْمِنِ.
4. It is narrated from him (narrator of the Hadith above) from Ahmad ibn Muhammad from al-Hassan ibn Mahbub from Jamil from Marazim from Abu ‘Abdillah who has said the following: “Allah the best way to worship is to fulfil (protect) the rights of the believer.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).