Musannaf Ibn Abi Shayba 18:168

Abu Bakr narrated to us, he said: Abu Khalid narrated to us, from Awf, who said: I heard an old man before the sedition of Ibn al-Ash'ath, and he described his description. They said: "That is Abu al-Muhallab, the uncle of Abu Qilabah." He said: He threw a stone at a man’s head, so his hearing, his tongue, his intellect, and his penis were lost, and he could no longer approach women. Umar judged regarding him with four blood-monies.