Narrated Ibn Abbas: Umar said, "Our best Qur'an reciter is Ubai and our best judge is 'Ali; and in spite of this, we leave some of the statements of Ubai because Ubai says, 'I do not leave anything that I have heard from Allah's Apostle while Allah: "Whatever verse (Revelations) do We abrogate or cause to be forgotten but We bring a better one or similar to it." (2.106)

— Sahih Bukhari, Volume 6, Book 60: Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)), Hadith #8