Senior Successor, Imām, proof, the scholar of his time, ʿAbd al-Raḥmān b. Mull or Mill but it is also said to be Ibn Malī, lived through al-Jāhiliyyah and al-Islām and so is mukhaḍram, he accepted Islām during the Prophet’s ﷺ life but did not have the opportunity to meet him, lived long (130 years or so), went on military expeditions during the Caliphate of ʿUmar and many other expeditions after ʿUmar’s passing.
He narrated from ʿUmar (d. 23), ʿAlī (d. 40), Ibn Masʿūd (d. 32), Ubayy b. Kaʿb (d. 30), Bilāl (d. 20), Saʿd b. Abī Waqqāṣ (d. 55), Salmān al-Fārisī (d. 33), Ḥudhayfah b. al-Yamān (d. 36), Abū Mūsá al-Ashʿarī (d. 42), Usāmah b. Zayd (c. 53), Abū Hurayrah (d. 59), Ibn ʿAbbās (d. 68) and others.
Those who narrated from him include Qatādah (d. 117), Sulaymān al-Taymī (d. 143), Ayyūb al-Sakhtiyānī (d. 131), and others.
He took part in the Battle of al-Yarmūk in the year 15H against the Byzantine Empire. He was declared reliable by ʿAlī b. al-Madīnī (d. 234), Abū Zurʿah (d. 264) and others. He performed Ḥajj and ʿUmrah 60 times, accompanied the Companion Salmān al-Fārisī (d. 33) for 12 years, would pray until he would become unconscious, and it is said he would pray 100 units between al-Maghrib and al-ʿIshāʾ. He was graded reliable by Abū Ḥātim (d. 277).
Siyar, 4: 175.