The interference of Chosroes in the affairs of a country so distant as Western Arabia involved considerable difficulties; but his expedition was facilitated by an application which he received from a native of the district in question. Saif, the son of Dsu-Yezm, descended from the race of the old Homerite kings whom the Abyssinians had conquered, grew up at the court of Abraha in the belief that that prince, who had married his mother, was not his step-father, but his father. Undeceived by an insult which Masrouq, the true son of Abraha and successor of Yaksoum, offered him, Saif became a refugee at the court of Chosroes, and importuned the Great King to embrace his quarrel and reinstate him on the throne of his fathers. He represented the Homerite population of Yemen as groaning under the yoke of their oppressors and only waiting for an opportunity to rise in revolt and shake it off. A few thousand Persian troops, enough to form the nucleus of an army, would suffice; they might be sent by sea to the port of Aden, near the mouth of the Arabian Gulf, where the Homerites would join them in large numbers; the combined forces might then engage in combat with the Abyssinians, and destroy them or drive them from the land. Chosroes took the advice tendered him, so far at any rate as to make his expedition by sea. His ships were assembled in the Persian Gulf; a certain number of Persian troops were embarked on board them; and the flotilla proceeded, under the conduct of Saif, first to the mouth of the Gulf, and then along the southern coast of Arabia to Aden. Encouraged by their presence, the Plomerites rose against their foreign oppressors; a war followed, of which the particulars have been disfigured by romance; but the result is undoubted--the Abyssinian strangers were driven from the soil of Arabia; the native race recovered its supremacy; and Saif, the descendant of the old Homerite kings, was established, as the vassal or viceroy of Chosroes, on the throne of his ancestors. This arrangement, however, was not lasting. Saif, after a short reign, was murdered by his body-guard; and Chosroes then conferred the government of Yemen upon a Persian officer, who seems to have borne the usual title of Marzpan, and to have been in no way distinguished above other rulers of provinces. Thus the Homerites in the end gained nothing by their revolt but a change of masters. They may, however, have regarded the change as one worth making, since it gave them the mild sway of a tolerant heathen in lieu of the persecuting rule of Christian bigots.