(13) باب الأَمْرِ بِلُزُومِ الْجَمَاعَةِ عِنْدَ ظُهُورِ الْفِتَنِ وَتَحْذِيرِ الدُّعَاةِ إِلَى الْكُفْرِ
It has been narrated on the authority of Ibn 'Abdullah al-Bajali that the Messenger of Allah (ﷺ) said:
One who is killed under the banner of a man who is blind (to his just cause), who raises the slogan of family or supports his own tribe, dies the death of one belonging to the days of Jahiliyya.
Reference: Sahih Muslim 1850
In-book reference: Book 33, Hadith 89
USC-MSA web (English) reference(deprecated numbering scheme): Book 20, Hadith 4561