From Sahih Bukhari (Hadith 4481):
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 Messenger (ﷺ) while Allah said: "Whatever verse (Revelations) do We abrogate or cause to be forgotten but We bring a better one or similar to it
Reference: Bukhari 4481