It was narrated that 'Uthman bin 'Affan said that:
The Messenger of Allah said: (According to one of the narrators) Shu'bah (he) said: 'The best of you' (and according to) Sufyan (he) said: "The most excellent of you is the one who learns the Qur'an and teaches it."

حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ الْقَطَّانُ، حَدَّثَنَا شُعْبَةُ، وَسُفْيَانُ، عَنْ عَلْقَمَةَ بْنِ مَرْثَدٍ، عَنْ سَعْدِ بْنِ عُبَيْدَةَ، عَنْ أَبِي عَبْدِ الرَّحْمَنِ السُّلَمِيِّ، عَنْ عُثْمَانَ بْنِ عَفَّانَ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ قَالَ شُعْبَةُ " خَيْرُكُمْ " . وَقَالَ سُفْيَانُ " أَفْضَلُكُمْ مَنْ تَعَلَّمَ الْقُرْآنَ وَعَلَّمَهُ " .