"whoever knows of a wrongdoing by his brother and conceals it, Allāh will conceal him on the Day of Resurrection?" He said: "Yes." He said: "For this I have come." I said: Its narrators are trustworthy, the narrators of Muslim, except that Makhūl did not hear from ʿUqbah, as al-Ḥākim said. Aḥmad also narrated from Ibn Jurayj from Ibn al-Munkadir from Abū Ayyūb from Muslimah ibn Makhlad in a marfūʿ form. Its narrators are trustworthy, and there is a disagreement regarding the companionship of Muslimah ibn Makhlad. There is another chain for the ḥadīth from ʿUqbah ibn ʿĀmir with different wording, which I have documented in the other book (1265). It has a corroborating narration from Abū Hurayrah in a marfūʿ form. It was recorded by Aḥmad (2/296, 500, 514), al-Khaṭīb (10/85), and Ibn ʿAsākir (17/298/1) through the route of Muḥammad ibn Wāsiʿ (from Muḥammad ibn al-Munkadir) from Abū Ṣāliḥ from him. I said: Its isnād is authentic according to the criteria of Muslim. Sahl ibn Abī Ṣāliḥ followed it up from his father from Abū Hurayrah with a similar narration. It was recorded by Aḥmad (2/388, 404, 522). Its isnād is also according to the criteria of Muslim. Then I saw it in "Ṣaḥīḥ Muslim" (8/21) from this route with the wording: "No servant conceals another servant in this world except that Allāh will conceal him on the Day of Resurrection." Al-Ḥākim attempted to include it (4/383-384) in Muslim's work, but he erred. Al-Aʿmash narrated from Abū Ṣāliḥ in a ḥadīth whose beginning is: