عَنِ الْبَرَاءِ بْنِ عَازِبٍ رَضِيَ اللَّهُ عَنْهُ قَالَ مَرَّ بِي عَمِّي الْحَارِثُ بْنُ عَمْرٍو رَضِيَ اللَّهُ عَنْهُ وَمَعَهُ لِوَاءٌ قَدْ عَقَدَهُ لَهُ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ فَقُلْتُ لَهُ يَا عَمِّ أَيْنَ بَعَثَكَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ بَعَثَنِي إِلَى رَجُلٍ تَزَوَّجَ امْرَأَةَ أَبِيهِ فَأَمَرَنِي أَنْ أَضْرِبَ عُنُقَهُ
Narrated from Sayyiduna Bara’ bin Azib (may Allah be pleased with him), he says: My uncle Sayyiduna Harith bin Amr (may Allah be pleased with him) passed by me and he had a flag with him, which the Noble Prophet (peace and blessings be upon him) had tied and given to him. I said to him: O uncle! Where has the Noble Prophet (peace and blessings be upon him) sent you? He said: The Prophet (peace and blessings be upon him) has sent me to a man who has married his father’s wife, and he has commanded me to behead him.