Hammam said: I said to Anas bin Malik (RA): Who collected the Qur'an during the lifetime of Allah's Messenger (ﷺ) ? He said: Four (persons), all of them belonging to Ansar: Ubayy bin Ka'b, Mu'adh bin Jabal, Zaid bin Thabit and a person from the Ansar whose Kunya was Abu Zaid.