Narrated By Al-Bara' ibn Azib: I met my uncle who was carrying a standard. I asked him: 'Where are you going?' He said: 'The Apostle of Allah (SAW) has sent me to a man who has married his father's wife. He has ordered me to cut off his head and take his property.' [Sunan Abu Dawud (4/157) No. 4457, Sunan al-Nasa'i (6/109) No. 3332, Sunan al-Darime (2/205) No. 2239, Musnad Ahmad (4/290) No. 18580]