Sunan of Abu Dawood Book 40, Hadith 4456

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا خَالِدُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا مُطَرِّفٌ، عَنْ أَبِي الْجَهْمِ، عَنِ الْبَرَاءِ بْنِ عَازِبٍ، قَالَ بَيْنَا أَنَا أَطُوفُ، عَلَى إِبِلٍ لِي ضَلَّتْ إِذْ أَقْبَلَ رَكْبٌ أَوْ فَوَارِسُ مَعَهُمْ لِوَاءٌ فَجَعَلَ الأَعْرَابُ يُطِيفُونَ بِي لِمَنْزِلَتِي مِنَ النَّبِيِّ صلى الله عليه وسلم إِذْ أَتَوْا قُبَّةً فَاسْتَخْرَجُوا مِنْهَا رَجُلاً فَضَرَبُوا عُنُقَهُ فَسَأَلْتُ عَنْهُ فَذَكَرُوا أَنَّهُ أَعْرَسَ بِامْرَأَةِ أَبِيهِ ‏.‏

Narrated Al-Bara' ibn Azib: while I was wandering in search of my camels which had strayed, a caravan or some horsemen carrying a standard came forward. The bedouin began to go round me for my position with the Prophet (ﷺ). They came to a domed structure, took out a man from it, and struck his neck. I asked about him. They told me that he had married his father's wife