that the Messenger of Allah (ﷺ) said to Ubayy bin Ka'b: "Indeed Allah ordered me to recite to you: Those who disbelieve were not going to... (98:1) He said: "And He named me?" He said: "Yes." So he wept.
that the Messenger of Allah (ﷺ) said to him: "Indeed, Allah ordered me to recite to you, so he recited in it: "Those who disbelieve from amongst the People of the Book were not going to...'" (And he) also recited in it, "Indeed, the religion with Allah is Al-Hanafiyyah, the Muslim, not Judaism, nor Christianity, whoever does good, it shall not be rejected from him." And he recited to him: "And if the son of Adam had a valley-full of wealth, he would seek a second, and if he had a second, he would seek a third, and nothing fills the belly of the son of Adam except for dirt. And Allah pardons those who repent."
that Anas bin Malik said: "Four gathered the Qur'an during the time of the Messenger of Allah (ﷺ), all of them are from the Ansar: Ubayy bin Ka'b, Mu'adh bin Jabal, Zaid bin Thabit, and Abu Zaid." I said to Anas: "Who is Abu Zaid?" He said: "One of my uncles."
narrated that the Messenger of Allah (ﷺ) said: "What an excellent man is Abu Bakr, what an excellent man is 'Umar, what an excellent man is Abu 'Ubaidah bin Al-Jarrah, what an excellent man is Usaid bin Hudair, what an excellent man is Thabit bin Qais bin Shammas, what an excellent man is Mua'dh bin Jabal, and what an excellent man is Mu'adh bin 'Amr bin Al-Jamuh."
that Al-'Aqib and As-Sayyid (two of the leaders of the Christians of Najran) came to the Prophet (ﷺ) and said: "Send with us your trustworthy one." He said: "I shall send with you a trustworthy one who is truly a trustworthy one." So the people desired that, and he sent Abu 'Ubaidah, may Allah be pleased with him.
To us (saying): Waki' narrated to us (saying): Sufyan reported to us from 'Abdul-Malik bin 'Umair, from a freed slave of Rib'i bin Hirash, from Hudhaifah who said: "We were sitting with the Prophet SAW and he said: "I do not know how long I will be with you, so stick to the two after me,' and he signaled towards Abu Bakr and 'Umar- 'And act upon the guidance of 'Ammar, and whatever Ibn Mas'ud reports to you, then believe him.'"