Musannaf Ibn Abi Shaybah

Muhammad says that Hazrat Ubaidah was the guardian of his people.

Hazrat Qurrah says that Hazrat Abu al-Sawar was appointed as an overseer during the time of Hajjaj.

Hazrat Jabir narrates that when Hazrat Umar bin Khattab was granted the caliphate, he fixed shares, established registers, and appointed supervisors. Hazrat Jabir said: He appointed me as a supervisor over my companions.

Hazrat Yunus bin Abi Ishaq says that I saw Hazrat Saeed bin Wahb as the guardian of his people.

Hazrat Abdul Aziz says that Hazrat Abu al-Sawar was the overseer of the tribe of Banu Adi.