Abdul Zahoor Khan, Syed Akmal Hussain Shah, and Zeenat Un Nisa. “Roman Empire and The Arab World: A Historical Investigation of the Relationship up to the Period of the Last Prophet of AllahHazrat Muhammad (S.A.W.W)”. ASIAN Journal of International Peace & Security (AJIPS), vol. 4, no. 2, Feb. 2021, pp. 223 -4, http://ajips.org/index.php/ajips/article/view/2020-vol-4-roman-empire-and-the-arab-world.