As for al-Ḥārith, a single hadith of his is found in the Musnad of Baqī ibn Makhlad. He served as governor of Mecca under ʿUmar, died during the caliphate of ʿUthmān, and had once brought his son Babbah to the Messenger of Allah ﷺ, who performed taḥnīk for him.

Babbah transmitted from ʿUmar, ʿUthmān, ʿAlī, Ubayy, al-ʿAbbās, Ṣafwān ibn Umayyah, Ḥakīm ibn Ḥizām, Umm Hāniʾ bint Abī Ṭālib, Kaʿb al-Aḥbār, and others. Those who narrated from him include his two sons Isḥāq and ʿAbd Allāh, as well as al-Zuhrī, Abū al-Tayyāḥ Yazīd ibn Ḥumayd, Yazīd ibn Abī Ziyād, ʿAbd al-Malik ibn ʿUmayr, Abū Isḥāq al-Sabīʿī, ʿUmar ibn ʿAbd al-ʿAzīz, and many more. He related a number of hadiths.

Muḥammad ibn Saʿd said: “He is reliable, a Successor; his mother brought him to the Prophet ﷺ when the Prophet entered upon her, whereupon he moistened the child’s mouth with his saliva and prayed for him.” (1)

Al-Zubayr ibn Bakkār said: “His mother was Hind, the sister of Muʿāwiyah.” I say: she was also the sister of the Mother of the Believers Umm Ḥabībah.

He added that she would bounce him on her knee and chant:

O Babbah, dear Babbah …
I shall surely wed Babbah
To a graceful, stately maiden,
Who will rule the folk of the Kaʿbah. (2)

When ʿUbayd Allāh ibn Ziyād fled to Syria after Yazīd’s death, the notables of Basra agreed to appoint him as their leader. They then wrote to Ibn al-Zubayr pledging their allegiance, so Ibn al-Zubayr installed him.