 The tribe refused to grant refuge to al-Nu'man, who was married to two Tayyid women, and he was ultimately killed by the Sassanids in 602.A Tayyid chief, Iyas ibn Qabisah al-Ta'i, subsequently migrated to al-Hirah with some of his tribesmen and became its governor, ruling from 602 to 611 CE.The Banu Bakr ibn Wa'il tribe opposed the rule of Iyas and began raiding Sassanid territory in southern Mesopotamia.