Sunan Abi Dawud, Hadith 2647 ⓘ

Ibn Salamah bin Al Akwa’ repoted on the authority of his father. A spy of the polytheists came to the Prophet when he was on a journey. He sat near his Companions and then slipped away. The Prophet said “look for him and kill him”. He said “I raced to him and killed him. I took his belongings which he (the Prophet) gave me.

حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ حَدَّثَنَا أَبُو عُمَيْسٍ، عَنِ ابْنِ سَلَمَةَ بْنِ الأَكْوَعِ، عَنْ أَبِيهِ، قَالَ أَتَى النَّبِيَّ صلى الله عليه وسلم عَيْنٌ مِنَ الْمُشْرِكِينَ - وَهُوَ فِي سَفَرٍ - فَجَلَسَ عِنْدَ أَصْحَابِهِ ثُمَّ انْسَلَّ فَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏ "‏ اطْلُبُوهُ فَاقْتُلُوهُ ‏" ‏ ‏.‏ قَالَ فَسَبَقْتُهُمْ إِلَيْهِ فَقَتَلْتُهُ وَأَخَذْتُ سَلَبَهُ فَنَفَّلَنِي إِيَّاهُ ‏.‏