Musannaf Ibn Abi Shaybah 29716 — A man who finds a man with his wife

Ibn Jurayj said: I asked Ata about a man who finds another man with his wife and kills him: is his blood to go unavenged? He said: No matter stands except with testimony. I said: What if testimony is given against that man that he committed adultery in my household? He said: Even if there is testimony, no ruling stands except with testimony; no ruling stands except with testimony.