 However, the Arabic sources claim the Byzantines left after hearing of the arrival of Zengid reinforcements while the Greek sources claim the withdrawal was precipitated by a Zengid attack on Byzantine-held Edessa and Sultan's offer to pay off John II.The domain of the Banu Munqidh entered a long period of stability and prosperity beginning in 1138.Shayzar and it's dependencies remained under the control of Sultan who ruled under the authority of the Zengid dynasty.