Musannaf Ibn Abi Shaybah 29518 — A man who wounds himself

Sayyiduna Abdullah bin Amr (may Allah be pleased with him) said: A man was driving a donkey while riding on it. He struck it with a stick he had with him, and a splinter from it flew off, struck his eye and gouged it out. The matter was then brought before Sayyiduna Umar bin al-Khattab (may Allah be pleased with him), and he said: This is one of the hands of the Muslims; it committed no transgression against anyone. And he placed the blood money for his eye upon his family.