The Sufficient (Vol 1) · Hadith 1056 (#Ḥadīth #5)
Chapter 103 | The Commands of the Holy Prophet to Wish Well for the Imams of Muslims, Remain Close with their Group and as to Who They are.
5ـ وَبِهَذَا الاسْنَادِ عَنْ أَبِي عَبْدِ الله قَالَ مَنْ فَارَقَ جَمَاعَةَ الْمُسْلِمِينَ وَنَكَثَ صَفْقَةَ الامَامِ جَاءَ إِلَى الله عَزَّ وَجَلَّ أَجْذَمَ.
5. Through the same chain of narrators it is narrated from abu ‘Abdallah who has said the following. “Whoever would distance himself from the company of the Muslims and disregard the pledge of allegiance with the Imam he will come before Allah with his hand cut off.”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).