 There was a degree of intermarriage between the Tayy and Quraysh.The Tayy also had a level of interaction with the Jewish tribe of Banu Nadir, with the father of one of its leading members and enemy of the early Muslims, Ka'b ibn al-Ashraf (died 624), being from Tayy.In the first years of Muhammad's mission, individual members of certain Tayyid clans converted to Islam.