Sunan Ibn Majah 211
سنن ابن ماجه#211SahihIt 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari