I said to Anas b. Malik: Who collected the Qur'an during the lifetime of Allah's Messenger (ﷺ)? He said: Four (persons), all of them belonging to Ansir: Ubayy b. Ka'b, Mu'adh b. Jabal, Zaid b. Thabit and a person from the Ansar whose Kunya was Abu Zaid.
Reference: Sahih Muslim 2465 b In-book : Book 44, Hadith 171 USC-MSA web (English) : Book 31, Hadith 6030 (deprecated)
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