(1/1/49), Ibn Hibban (966), al-Hakim (1/441), and Abu Nuʿaym in Akhbar Isfahan (1/203), all through Ibn Khuzaymah as well, from Sufyan ibn Habib: Humayd al-Tawil narrated to us, from Bakr ibn ʿAbd Allah al-Muzani, from Ibn ʿUmar, in a report attributed to the Prophet. Al-Hakim said: “Authentic according to the criteria of the two Shaykhs.” Al-Dhahabi concurred with him, but this was an error on both their parts, for the two Shaykhs did not narrate from this Ibn Habib in their Sahihs; rather, al-Bukhari narrated from him only in al-Adab al-Mufrad. He is trustworthy, so the chain of transmission is authentic, but no more than that.
1452 — “O people, repent to Allah and seek His forgiveness, for I repent to Allah and seek His forgiveness one hundred times each day.”
Ahmad reported it (4/260–261 and 5/411) from Humayd ibn Hilal, from Abu Burdah, from a man among the Companions of the Prophet, peace and blessings be upon him. In one version, he said: “I sat with an elderly man from among the Companions of the Prophet, peace and blessings be upon him, in the mosque of Kufah, and he related to me, saying: ‘I heard the Messenger of Allah, peace and blessings be upon him—or,’ he said, ‘the Messenger of Allah, peace and blessings be upon him, said’”—and he then cited it. In another version, from a man among the Emigrants: “I heard the Prophet, peace and blessings be upon him, say”—and he then cited it. Al-Tabarani likewise reported this version in al-Muʿjam al-Kabir (1/45/2).
I say: This chain of transmission is authentic according to the criteria of the two Shaykhs, and the unknown identity of a Companion causes no harm. He appears to have been al-Agharr al-Muzani, for Ahmad also reported it (4/260), immediately before this, through Thabit al-Bunani and ʿAmr ibn Murrah, both from Abu Burdah, from him, with the same wording but without the command to seek forgiveness. Muslim (8/72–73), Ahmad as well (4/211), al-Nasaʾi in ʿAmal al-Yawm wa al-Laylah, as stated in al-Hafiz al-Mizzi’s Tuhfat al-Ashraf (1/78–79), and Abu Dawud (1/348—the al-Halabi edition) likewise reported it through the route of al-Bunani alone. Al-Mizzi noted that al-Nasaʾi also reported it through the first route, that of Humayd ibn Hilal. After writing the above, I saw that Ibn Abi Hatim mentioned the hadith in al-ʿIlal (2/137) through the first route and then said: “My father said: It is said that this man was al-Agharr al-Muzani, and that he was a Companion.”