The other two are from among the Followers of the Successors:

One (7/426) is identified by his grandfather’s name, Ibn Abī ʿAyyāsh. He narrates from ʿAṭāʾ ibn Yasār, and Abū Uways narrates from him.

The other (7/427) narrated from ʿAbd Allāh ibn ʿAbd al-Raḥmān, from ʿAlī, and Sharīk narrated from him.

Once you know this, it is difficult to determine which of them is intended in this hadith. Moreover, there is no significant benefit in doing so, since all of them are classed as unknown—although al-Bukhārī’s treatment in al-Tārīkh (1/1/236) indicates that he is the Successor who narrated from Ibn ʿAbbās.

It is noteworthy that Ibn Abī Ḥātim did not mention this one at all. Rather, he mentioned the one from whom Abū Uways narrated, as well as another who narrated from al-Qāsim ibn Mukhaymirah and from whom al-Awzāʿī narrated. His father said of the latter: “Unknown.”

Strangely, none of these four is mentioned in al-Mīzān or al-Lisān. However, the first-mentioned one—the narrator from Ibn ʿAbbās—was mentioned in al-Tahdhīb, and al-Taqrīb says of him:

“Obscure.”

He also included him in al-Taʿjīl, where he quoted al-Ḥusaynī’s judgment:

“Unknown.”

And he endorsed it.

This is what may be said concerning Muḥammad ibn Abī Mūsā.

As for his shaykh, Ziyād al-Anṣārī, it is possible, as al-Haythamī stated, that he is Ziyād Abū Yaḥyā—