Sunan Abi Dawud 1452
سنن أبي داود#1452SahihUthman reported the Prophet (ﷺ) as saying:The best among you is he who learns and teaches the Qur'an
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (5027)
In-book reference: 8:37