It is narrated from Sayyiduna Ali (may Allah be pleased with him): I was with the Prophet (peace and blessings be upon him), and with him were Abu Bakr and other Companions. We passed by Abdullah bin Mas'ud (may Allah be pleased with him) while he was praying, and the Prophet (peace and blessings be upon him) asked: "Who is this?" It was said: Abdullah bin Mas'ud. He (peace and blessings be upon him) said: "Indeed Abdullah recites the Qur'an fresh, just as it was revealed." Then Abdullah praised and glorified his Lord, and praised his Lord most beautifully; then he supplicated to Allah, and made a most comprehensive and excellent supplication, the best a servant could ask of his Lord. He said: 'Allahumma inni as'aluka imanan la yartadd, wa na'iman la yanfad, wa murafaqata Muhammadin (peace and blessings be upon him) fi a'la illiyyina fi jinanika jinan al-khuld' (O Allah, I ask You for faith that never fades, for blessing that never ends, and I seek the companionship of Muhammad (peace and blessings be upon him) in the highest ranks of Your everlasting Gardens). The narrator says that meanwhile he (peace and blessings be upon him) kept saying: "Ask, and you will be given; ask, and you will be given." Sayyiduna Ali (may Allah be pleased with him) says: I hurried to give him this good news, and I found that Abu Bakr (may Allah be pleased with him) had reached him before me, and he was one who raced ahead in good deeds. This hadith has a sahih (authentic) chain of transmission, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "I am pleased for my Ummah with what Ibn Umm Abd (Abdullah bin Mas'ud) is pleased with for them." This chain is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it. However, there is a hidden defect ('illah) in it because of the narration of Sufyan al-Thawri and Isra'il bin Yunus from Mansur.

Imam al-Hakim says that the above hadith was also narrated by Sufyan al-Thawri from Mansur.

Isra'il bin Yunus also narrates, through Mansur, from al-Qasim bin Abd al-Rahman that the Messenger of Allah (peace and blessings be upon him) said: "I am pleased for my Ummah with what Ibn Umm Abd is pleased with for them."

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "If I were to appoint anyone as successor without consultation, I would have appointed Ibn Umm Abd (Abdullah bin Mas'ud) as successor over them." This hadith has a sahih (authentic) chain of transmission, but the two Shaykhs did not record it.