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 al-Bukhari, 4481
• Sahih al-Bukhari, Vol. 6, Book of Prophetic Commentary on the Qur'an, Hadith 8
• Sahih al-Bukhari, Book of Prophetic Commentary on the Qur'an, Hadith 8