Al-‘Irbad ibn Sariyah reported: The Messenger of Allah, peace and blessings be upon him, prayed with us one day. Then, he faced us and delivered an eloquent sermon that brought tears to our eyes and hearts were shaken by it. It was said, “O Messenger of Allah, it is as if this is a farewell address. What do you instruct for us?” The Prophet said, “I advise you to fear Allah, listen, and obey, even if an Abyssinian slave is put in charge of you. Whoever lives after me will see many conflicts. You must adhere to my Sunnah and the Sunnah of the righteous, guided successors. Hold firmly to it as if biting with your molar teeth. Beware of newly invented matters in religion, for every new matter is an innovation and every innovation is misguidance.”
Source: Sunan Abī Dāwūd 4607
Grade: Sahih (authentic) according to Al-Arna’ut
عَنْ الْعِرْبَاضِ بْنِ سَارِيَةَ قَالَ صَلَّى بِنَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ذَاتَ يَوْمٍ ثُمَّ أَقْبَلَ عَلَيْنَا فَوَعَظَنَا مَوْعِظَةً بَلِيغَةً ذَرَفَتْ مِنْهَا الْعُيُونُ وَوَجِلَتْ مِنْهَا الْقُلُوبُ فَقَالَ قَائِلٌ يَا رَسُولَ اللَّهِ كَأَنَّ هَذِهِ مَوْعِظَةُ مُوَدِّعٍ فَمَاذَا تَعْهَدُ إِلَيْنَا فَقَالَ أُوصِيكُمْ بِتَقْوَى اللَّهِ وَالسَّمْعِ وَالطَّاعَةِ وَإِنْ عَبْدًا حَبَشِيًّا فَإِنَّهُ مَنْ يَعِشْ مِنْكُمْ بَعْدِي فَسَيَرَى اخْتِلَافًا كَثِيرًا فَعَلَيْكُمْ بِسُنَّتِي وَسُنَّةِ الْخُلَفَاءِ الْمَهْدِيِّينَ الرَّاشِدِينَ تَمَسَّكُوا بِهَا وَعَضُّوا عَلَيْهَا بِالنَّوَاجِذِ وَإِيَّاكُمْ وَمُحْدَثَاتِ الْأُمُورِ فَإِنَّ كُلَّ مُحْدَثَةٍ بِدْعَةٌ وَكُلَّ بِدْعَةٍ ضَلَالَةٌ
4607 سنن أبي داود كتاب السنة باب في لزوم السنة
7/17 المحدث شعيب الأرناؤوط خلاصة حكم المحدث صحيح في تخريج سنن أبي داود