There, at the confluence of the Acesines and Indus, he waited until Perdiccas with the army arrived, after having routed on his way the independent tribe of the Abastanians.[762] Meantime, he was joined by other thirty-oared galleys and trading vessels which had been built for him among the Xathrians, another independent tribe of Indians who had yielded to him. From the Ossadians, who were also an independent tribe of Indians, came envoys to offer the submission of their nation. Having fixed the confluence of the Acesines and Indus as the limit of Philip’s viceroyalty, he left with him all the Thracians and as many men from the infantry regiments as appeared to him sufficient to provide for the security of the country. He then ordered a city to be founded there at the very junction of the two rivers, expecting that it would become large and famous among men.[763] He also ordered a dockyard to be made there. At this time the Bactrian Oxyartes, father of his wife Roxana, came to him, to whom he gave the viceroyalty over the Parapamisadians, after dismissing the former viceroy, Tiryaspes, because he was reported to be exercising his authority improperly.[764] Then he transported Craterus with the main body of the army and the elephants to the left bank of the river Indus, both because it seemed easier for a heavy-armed force to march along that side of the river, and the tribes dwelling near were not quite friendly. He himself sailed down to the capital of the Sogdians; where he fortified another city, made another dockyard, and repaired his shattered vessels. He appointed Oxyartes viceroy, and Peithon general of the land extending from the confluence of the Indus and Acesines as far as the sea, together with all the coastland of India. He then again despatched Craterus with his army through the country of the Arachotians and Drangians; and himself sailed down the river into the dominions of Musicanus, which was reported to be the most prosperous part of India. He advanced against this king because he had not yet come to meet him to offer the submission of himself and his land, nor had he sent envoys to seek his alliance. He had not even sent him the gifts which were suitable for a great king, or asked any favour from him. He accelerated his voyage down the river to such a degree that he succeeded in reaching the confines of the land of Musicanus before he had even heard that Alexander had started against him. Musicanus was so greatly alarmed that he went as fast as he could to meet him, bringing with him the gifts valued most highly among the Indians, and taking all his elephants. He offered to surrender both his nation and himself, at the same time acknowledging his error, which was the most effectual way with Alexander for any one to get what he requested. Accordingly for these considerations Alexander granted him an indemnity for his offences. He also granted him the privilege of ruling the city and country, both of which Alexander admired.