from 'Uthman bin 'Affan that the Messenger of Allah ﷺ said: "The best of you is he who learns the Qur'an and teaches it." Abu 'Abdur-Rahman said: "So that is why I sit at this seat of mine." And he taught the Qur'an during the time of 'Uthman until Al-Hajjaj bin Yusuf came. (Sahih)  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ خَيْرُكُمْ مَنْ تَعَلَّمَ الْقُرْآنَ وَعَلَّمَهُ قَالَ أَبُو عَبْدِ الرَّحْمَنِ فَذَاكَ الَّذِي أَقْعَدَنِي مَقْعَدِي هَذَا وَعَلَّمَ الْقُرْآنَ فِي زَمَنِ عُثْمَانَ حَتَّى بَلَغَ الْحَجَّاجَ بْنَ يُوسُفَ  

ʿThe best of you is the one who teaches Qurʿan or learns it.” Muhammad bin Jaʿfar and Hajjaj said: Abu ʿAbdurRahman said: That is what made me sit in this place (i.e., become a teacher). Hajjaj said: Shuʿbah said: Abu ʿAbdur-Rahman did not hear (it) from ʿUthman ؓ or from ‘Abdullah, but he heard it from ‘Ali ؓ . My father said and Bahz said: (It was narrated from) Shuʿbah who said: ʿAIqamah bin Marthad told me. “The best of you is the one who learns Qurʿan and teaches it.ʿ ʿAffan told us: Shuʿbah told us: ʿAlqamah bin Marthad told me... and he said in it: “Whoever learns the Qurʿan or teaches it.”  

عَنِ النَّبِيِّ ﷺ أَنَّهُ قَالَ إِنَّ خَيْرَكُمْ مَنْ عَلَّمَ الْقُرْآنَ أَوْ تَعَلَّمَهُ قَالَ مُحَمَّدُ بْنُ جَعْفَرٍ وَحَجَّاجٌ قال فَقَالَ أَبُوعَبْدِ الرَّحْمَنِ فَذَاكَ الَّذِي أَقْعَدَنِي هَذَا الْمَقْعَدَقَالَ حَجَّاجٌ قَالَ شُعْبَةُ وَلَمْ يَسْمَعْ أَبُو عَبْدِ الرَّحْمَنِ مِنْ عُثْمَانَ وَلَا مِنْ عَبْدِ اللهِ وَلَكِنْ قَدْ سَمِعَ مِنْ عَلِيٍّ أَبِي وَقَالَ بَهْزٌ عَنْ شُعْبَةَ قَالَ عَلْقَمَةُ بْنُ مَرْثَدٍ أَخْبَرَنِي وَقَالَ خَيْرُكُمْ مَنْ تَعَلَّمَ الْقُرْآنَ وَعَلَّمَهُ