Muḥammad b. Ismāʿīl b. Ibrāhīm Ibn ʿUlayyah > Isḥāq b. ʿĪsá / al-Ṭabbāʿ > Sharīk > ʿAwf / al-Aʿrābī > Sulaymān b. Jābir > ʿAbdullāh b. Masʿūd

The Messenger of Allah ﷺ said, "Learn the Quran and teach it to others, learn knowledge and teach it to others, and learn the religious obligations (Fara'id) and teach them to others. Verily, I am a person who will be taken, and knowledge will decrease until there will be disputes between two individuals regarding a religious obligation, and there will be no judge to settle their dispute."

أَخْبَرَنِي مُحَمَّدُ بْنُ إِسْمَاعِيلَ بْنِ إِبْرَاهِيمَ ابْنِ عُلَيَّةَ قَالَ حَدَّثَنَا إِسْحَاقُ بْنُ عِيسَى يَعْنِي الطَّبَّاعَ قَالَ حَدَّثَنَا شَرِيكٌ عَنْ عَوْفٍ يَعْنِي الْأَعْرَابِيَّ عَنْ سُلَيْمَانَ بْنِ جَابِرٍ عَنْ عَبْدِ اللهِ بْنِ مَسْعُودٍ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «تَعَلَّمُوا الْقُرْآنَ وَعَلِّمُوهُ النَّاسَ وَتَعَلَّمُوا الْعِلْمَ وَعَلِّمُوهُ النَّاسَ وَتَعَلَّمُوا الْفَرَائِضَ وَعَلِّمُوهَا النَّاسَ فَإِنِّي امْرُؤٌ مَقْبُوضٌ وَإِنَّ الْعِلْمَ سَيَنْقُصُ حَتَّى يَخْتَلِفَ الِاثْنَانِ فِي الْفَرِيضَةِ فَلَا يَجِدَانِ مَنْ يَفْصِلُ بَيْنَهُمَا»