Khosrau I
At this period there was a considerable Nestorian Christian presence in east Arabia, a region known in Syriac as Beth Qatraye. According to the "Chronicle of Seert", Ezekiel visited Bahrain and Yamama and brought back pearls for the Sasanian king Khosrau I. Khosrau's interest in the condition of the local pearl fisheries was doubtless an indication of their economic importance in the sixth century.