ALIZADEH, RAMIN, and MAHDI GOLJAN. “A Study of the Personality and Actions of Qays Ibn Sa’d Ibn Ubadah Ansari”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 2, Apr. 2021, pp. 1381-7, https://www.cibgp.com/index.php/1323-6903/article/view/1041.