“Ḥarb ibn Maymūn (Muslim, al-Tirmidhī), Abū al-Khaṭṭāb al-Anṣārī, a Basran narrator: truthful, though prone to error. Abū Zurʿah said: ‘Somewhat weak.’ Yaḥyā ibn Maʿīn said: ‘Acceptable.’ I say: He narrated from his patron al-Naḍr ibn Anas and from ʿAṭāʾ ibn Abī Rabāḥ. Among those who narrated from him were ʿAbd Allāh ibn Rajāʾ, Yūnus al-Muʾaddib, and a group of others. ʿAlī ibn al-Madīnī and others declared him trustworthy. As for al-Bukhārī, he mentioned him in al-Ḍuʿafāʾ, but did not mention the one following him, Ṣāḥib al-Aghmiyah (the man of the coverings) (1) ...”

Al-Dhahabī then said immediately afterward: “Ḥarb ibn Maymūn al-ʿAbdī, Abū ʿAbd al-Raḥmān al-Baṣrī, the devout worshipper known as Ṣāḥib al-Aghmiyah, narrated from ʿAwf, Ḥajjāj ibn Arṭāh, and Khālid al-Ḥadhdhāʾ ... Ibn al-Madīnī and al-Fallās declared him weak, while Ibn Maʿīn said: ‘Acceptable.’ I say: He died in the latter part of the 180s AH. He is the younger and weaker one. Al-Bukhārī and Ibn ʿAdī conflated him with the one before him, treating them as a single person; but the correct view is that they are two: the first is truthful and met ʿAṭāʾ, whereas the second is weak and older, and Ḥumayd al-Ṭawīl narrated from him. ʿAbd al-Ghanī ibn Saʿīd said: ‘This is one of the matters in which al-Bukhārī erred; al-Dāraquṭnī drew my attention to it.’”

I say: What al-Dhahabī, may Allah have mercy on him, deemed correct is indeed correct, and more than one imam among the early and later scholars stated this decisively. Al-Sājī said: “Ḥarb ibn Maymūn the younger is weak in hadith and has objectionable reports, whereas the elder is truthful.” ʿAmr ibn ʿAlī al-Fallās said likewise, and ʿAbd Allāh ibn ʿAlī related something similar from his father. Regarding the elder one, al-Ḥāfiẓ Ibn Ḥajar said: “Truthful; accused of denying divine decree; from the seventh tier.” And regarding the younger one: