Musannaf Ibn Abi Shayba 11:111

Abdullah ibn Idris narrated to us, from Muhammad ibn Ishaq, from Yahya ibn Abbad ibn Abdullah ibn al-Zubayr, from his father, from his grandfather, who said: My father, who nursed me—and he was one of the Banu Murrah—informed me, saying: It is as if I am looking at Ja'far on the day of Mu'tah; he dismounted from a sorrel horse of his, then he hamstrung it, then he went forth and fought until he was killed.