The Chachnāma (Fatḥnāma-yi Sind) 101: Dahir gives the government of Bait to Rasil.

101

When Muhammad Kasim had collected his boats and began to join them together, Rasil with his officers and chiefs came to the opposite bank and prevented the completion of the bridge and the passage of the river. Muhammad Kasim thereupon ordered that the boats should all be brought to the western bank, and be there joined together, to a distance equal to the estimated breadth of the Mihran. He then placed his warriors fully armed upon the boats and let the head of the bridge, which was full of archers, float down to the eastern bank. The archers drove off the infidels who were posted to guard the passage. So the Arabs passed over to the other side, and driving pegs into the earth, made the bridge fast. The horse and foot then crossed and, giving battle, put the infidels to flight, and pursued them as far as the gates of Jham.