Hazrat Abu Musa Ash'ari (may Allah be pleased with him) narrated that my brother and I came from Yemen (to Madinah Tayyibah) and stayed here for a period of time. During this entire period, we kept thinking that Abdullah bin Mas'ud (may Allah be pleased with him) was a member of the household of the Prophet Muhammad (peace and blessings be upon him), because we ourselves used to see Abdullah bin Mas'ud (may Allah be pleased with him) and his mother frequently coming and going in the house of the Prophet (peace and blessings be upon him).

Hazrat Abdullah bin Mas'ud (may Allah be pleased with him) delivered a sermon and said: By Allah, I have learned more than seventy surahs directly from the blessed tongue of the Messenger of Allah (peace and blessings be upon him). By Allah, the companions of the Holy Prophet (peace and blessings be upon him) know very well that I am the most knowledgeable among them regarding the Holy Qur'an, although I am not better than them. Shaqiq (the narrator of the hadith) stated that then I sat in the gathering to hear the opinion of the companions, to see what they would say, but I did not hear anyone refute this statement.

Hazrat Ibn Mas'ud (may Allah be pleased with him) narrated: By Allah, besides whom there is no deity, I know about every surah of the Book of Allah that has been revealed, where it was revealed, and I know about every verse of the Book of Allah that has been revealed, about whom it was revealed. And if I come to know that there is someone who knows more about the Book of Allah than I do, and camels can take me to him (i.e., his house is very far), then I would travel to him and acquire that knowledge from him.

Masruq narrated that when Abdullah bin Mas'ud (may Allah be pleased with him) was mentioned in the presence of Abdullah bin Amr (may Allah be pleased with him), he said, "I will always love him, because I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: 'Learn the Qur'an from four persons: Abdullah bin Mas'ud'—the Prophet (peace be upon him) started with Abdullah bin Mas'ud (may Allah be pleased with him)—'and Salim, the freed slave of Abu Hudhaifah, Ubayy bin Ka'b, and Mu'adh bin Jabal.'"