The Banu Taghlib, also known as Taghlib ibn Wa'il, were an Arab tribe that originated in Jazira. Their parent tribe was the Rabi'a, and they thus traced their descent to the Adnanites. The Taghlib were among the most powerful and cohesive nomadic tribes of the pre-Islamic era and were known for their bitter wars with their kinsmen from the Banu Bakr, as well as their struggles with the Lakhmid kings of al-Hira in Iraq. The tribe embraced Miaphysite Christianity and remained largely Christian long after the advent of Islam in the mid-7th century. After early opposition to the Muslims, the Taghlib eventually secured for themselves an important place in Umayyad politics. They allied with the Umayyads and engaged in numerous battles with the rebellious Qaysi tribes during the Qays–Yaman feuding in the late 7th century.