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: "Whatever verse (Revelations) do We abrogate or cause to be forgotten but We bring a better one or similar to it." (2.106)
USC-MSA web (English) reference: Vol. 6, Book 60, Hadith 8
Arabic reference: Book 65, Hadith 4481