أَبُو سَلَّامٍ الْأَسْوَدُ عَنِ الْحَارِثِ الْأَشْعَرِيِّ
[Machine] The Messenger of Allah ﷺ said, "Shall I not tell you about five things which Allah has commanded me? They are: the Jama'ah (community of Muslims), listening and obeying (the Muslim leaders), hijrah (migration for the sake of Allah), striving and struggling in the cause of Allah. Whoever separates himself from the Jama'ah by a handspan has removed the yoke of Islam from his neck, unless he repents. And whoever calls to the ways of jahiliyyah (ignorance) is from the inhabitants of Hellfire." A man asked, "O Messenger of Allah, even if he prays and fasts?" He replied, "Even if he prays and fasts, he should call himself with the call of Allah, by which He has named you, 'Muslims, believers, worshipers of Allah'."
قَالَ رَسُولُ اللهِ ﷺ «أَلَا آمُرُكُمْ بِخَمْسِ كَلِمَاتٍ أَمَرَنِي اللهُ ﷻ بِهِنَّ؟ الْجَمَاعَةِ وَالسَّمْعِ وَالطَّاعَةِ وَالْهِجْرَةِ وَالْجِهَادِ فِي سَبِيلِ اللهِ فَمَنْ خَرَجَ مِنَ الْجَمَاعَةِ قَيْدَ شِبْرٍ فَقَدْ خَلَعَ رِبْقَةَ الْإِسْلَامِ مِنْ رَأْسِهِ إِلَّا أَنْ يَرْجِعَ وَمَنْ دَعَا بِدَعْوَى الْجَاهِلِيَّةِ فَإِنَّهُ مِنْ جُثَاءِ جَهَنَّمَ» قَالَ رَجُلٌ يَا رَسُولَ اللهِ وَإِنْ صَامَ وَصَلَّى؟ قَالَ «وَإِنْ صَامَ وَصَلَّى ادْعُوا بِدَعْوَى اللهِ الَّذِي سَمَّاكُمُ الْمُسْلِمِينَ الْمُؤْمِنِينَ عِبَادَ اللهِ»