The Book of the Merits of the Companions
44/23. Chapter:
The Virtues Of Ubayy Bin Ka'b And A Group Of The Ansar (RA)
Sahih Muslim
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا أَبُو دَاوُدَ، حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، قَالَ سَمِعْتُ أَنَسًا، يَقُولُ جَمَعَ الْقُرْآنَ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم أَرْبَعَةٌ كُلُّهُمْ مِنَ الأَنْصَارِ مُعَاذُ بْنُ جَبَلٍ وَأُبَىُّ بْنُ كَعْبٍ وَزَيْدُ بْنُ ثَابِتٍ وَأَبُو زَيْدٍ . قَالَ قَتَادَةُ قُلْتُ لأَنَسٍ مَنْ أَبُو زَيْدٍ قَالَ أَحَدُ عُمُومَتِي .
Anas is reported to have said: Four persons collected the Qur'an during the lifetime of Allah's Messenger (ﷺ) and all of them were Ansar: Mu'adh b. Jabal, Ubayy b. Ka'b, Zaid b. Thabit, Abu Zaid. Qatada said: Anas, who was Abu Zaid? He said: He was one of my uncles.
Reference : Sahih Muslim 2465aIn-book reference : Book 44, Hadith 170USC-MSA web (English) reference : Book 31, Hadith 6029