"Arb\u0101yist\u0101n (Syriac: B\u0113\u1E6F \u02BFArb\u0101y\u0113, Armenian: Arvastan) was a Sassanian province in Late Antiquity, that bordered the Roman Empire, and later the Byzantine Empire, and was a constant area of contention between the Romans and the Sassanians.The province reached across Upper Mesopotamia toward the Khabur and north to the lower districts of Armenia; it bordered Adiabene in the east, Armenia in the north and Assuristan in the south."@en . "Arbayistan"@en . . . . "Arb\u0101yist\u0101n"@en .