Imru' al-Qais
It is told that of all his father's sons, Imru' al-Qais was the only one to take responsibility for avenging his father. One story tells that the tribe of Asad sent him an emissary and offered him three options—either that he kill one of their nobles to equal the death of his father, or that he accept a payment of thousands of sheep and camels, or that he make war on them, in which case they asked for one month to make ready. Imru' al-Qais chose the third option. The tribes of Bakr and Taghlib agreed to support him and fought with him against Asad, killing many Asad tribesmen. Bakr and Taghlib withdrew their support once they judged that enough of Asad had been killed to satisfy the requirements of revenge.