Indeed, in the time of the caliphate this was the channel of the Tigris, and on its banks stood the important city of Wasit.
The last false prophet was M'hammad or Ahmat bar Bisbat (Mahomet), but Anosh, who remained close beside him and his immediate successors, prevented hostilities against the true believers, who claim to have had in Babylonia, under the Abbasids, four hundred places of worship. Subsequent persecutions compelled their withdrawal to `Ammara in the neighbourhood of Wasit, and ultimately to Khuzistan.
All the buildings, both public and private, are constructed of furnaceburnt bricks of a yellowish-red colour, principally derived from the ruins of other places, chiefly Madain (Ctesiphon), Wasit and Babylon, which have been plundered at various times to furnish materials for the construction of Bagdad.
Immediately after the victories of Dair al-Jamajim and Maskin, in 702, Hajjaj, built a new residence on the Tigris, between Basra and Kufa, which he called Wasit ("Middle").
He took his way over Wasit, which he mastered - the Syrian garrison seems to have been withdrawn in the days of Omar II.
Ibn Hobaira was overtaken and compelled to retire to Wasit.
Ibn Hobaira, who had been besieged in Wasit for eleven months, then consented to a capitulation, which was sanctioned by Abu'l-Abbas.
In the meanwhile Ibrahim had not only gained possession of Basra, Ahwaz and Fars, but had even occupied Wasit.
Tahir continued his victorious march, conquered Ahwaz, took Wasit and Madain, and pitched his camp near one of the gates of the capital, where he was rejoined by Harthama.
Abu`l-Saraya's success continued, and several cities of Irak - Basra, Wasit and Madain - fell into his hands.
In the time of the civil war the marshlands in Irak between Basra and Wasit had been occupied by a large population of Indians, called yat, or, according to the Arabic pronunciation, Zoti, who infested the roads and levied a heavy tribute from the ships ascending and descending the Tigris.
In this extremity the caliph bade Ibn Raiq, who had made himself master of Basra and Wasit, and had command of money and men, to come to his help. He created for him the office of Amir al-Omara, "Amir of the Amirs," which nearly corresponds to that of Mayor of the Palace among the Franks.'
His nephew Shah Walad reigned for a few months only and the throne was occupied by his widow Tandu, formerly wife of Barkuk, who ruled over Basra, Wasit and Shuster till 1416, paying allegiance to Shah Rukh, the second Timurid ruler.
In the days of its prosperity it rivalled Kufa and Wasit in wealth and size, and its fame is in the tales of the Arabian Nights.