Musannaf Ibn Abi Shaybah

Hazrat Auf narrates that I heard from an old man before the turmoil of Ibn al-Ash'ath that a man was struck by a stone on his head, which caused him to lose his intellect, memory, hearing, and speech, and he was no longer capable of being with women. So Umar gave the verdict of four blood monies (diyahs) regarding him.