His Statement: "Whatever a Verse (revelation) do We abrogate or cause to be forgotten, We bring a better one or similar to it..." (V.2:106)
حَدَّثَنَا عَمْرُو بْنُ عَلِيٍّ، حَدَّثَنَا يَحْيَى، حَدَّثَنَا سُفْيَانُ، عَنْ حَبِيبٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ عُمَرُ ـ رضى الله عنه ـ أَقْرَؤُنَا أُبَىٌّ، وَأَقْضَانَا عَلِيٌّ، وَإِنَّا لَنَدَعُ مِنْ قَوْلِ أُبَىٍّ، وَذَاكَ أَنَّ أُبَيًّا يَقُولُ لاَ أَدَعُ شَيْئًا سَمِعْتُهُ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم وَقَدْ قَالَ اللَّهُ تَعَالَى {مَا نَنْسَخْ مِنْ آيَةٍ أَوْ نَنْسَأْهَا}
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)