(13) باب الأَمْرِ بِلُزُومِ الْجَمَاعَةِ عِنْدَ ظُهُورِ الْفِتَنِ وَتَحْذِيرِ الدُّعَاةِ إِلَى الْكُفْرِ
It has been narrated on the authority of Ibn 'Abbas that the messenger of Allah (ﷺ) said:
One who found in his Amir something which he disliked should hold his patience, for one who separated from the main body of the Muslims even to the extent of a handspan and then he died would die the death of one belonging to the days of Jahiliyya.
Reference: Sahih Muslim 1849 a
In-book reference: Book 33, Hadith 87
USC-MSA web (English) reference(deprecated numbering scheme): Book 20, Hadith 4559