It is narrated from Hazrat Bara bin Azib (may Allah be pleased with him) that one day I met my uncle Harith bin Amr. He had a flag with him. I asked him, "Where are you going?" He replied, "The Noble Prophet (peace and blessings be upon him) has sent us to a man who, after his father's death, has married his father's wife (stepmother), and he has ordered me to behead him."