Jens (2004). "Seleucid Empire". Iran Chamber Society. مؤرشف من الأصل في 2018-10-20. اطلع عليه بتاريخ 2011-04-29. "SassanidEmpire". Iran Chamber Society
known as Middle Persian) was the official language of Iran during the Sassanid dynasty (from 3rd to 7th century A. D.). Pahlavi is the direct continuation
'Abd al-Malik's barid merely "continued" the pre-existing Byzantine and Sassanid postal systems. Hawting 1986، صفحة 64. Ibn Khurradadhbih 1889، صفحة 153