Yazid bin al-Bara' narrates from his father (may Allah be pleased with him) that he said: I met my paternal uncle (may Allah be pleased with him), and he was carrying a banner. I asked: Where are you headed? He said that the Messenger of Allah (peace and blessings be upon him) has sent me: "to a man who has married his father's wife, that I strike off his neck and also take his wealth."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13918