Sunan Ibn Majah, Volume 3, Book 21, Hadith 2678 (DarusSalam) ⓘ

It was narrated from 'Amr bin Shu'aib, from his father, from his grandfather, that : Huwayyisah and Muhayyisah, the sons of Mas'ud, and 'Abdullah and 'Abdur-Rahman the sons of Sahl, went out to search for food in Khaibar. 'Abdullah was attacked and killed, and mention of that was made to the Messenger of Allah. He said: “Will you swear an oath and establish your right to blood money?” They said: “O Messenger of Allah, how can we swear an oath when we did not witness anything?” He said: “Do you want the Jews to swear that they are innocent?” They said: “O Messenger of Allah, then they will kill us too.” So the Messenger of Allah paid the blood money himself.

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ سَعِيدٍ، حَدَّثَنَا أَبُو خَالِدٍ الأَحْمَرُ، عَنْ حَجَّاجٍ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، أَنَّ حُوَيِّصَةَ، وَمُحَيِّصَةَ، ابْنَىْ مَسْعُودٍ وَعَبْدَ اللَّهِ وَعَبْدَ الرَّحْمَنِ ابْنَىْ سَهْلٍ خَرَجُوا يَمْتَارُونَ بِخَيْبَرَ فَعُدِيَ عَلَى عَبْدِ اللَّهِ فَقُتِلَ فَذُكِرَ ذَلِكَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَ ‏"‏ تُقْسِمُونَ وَتَسْتَحِقُّونَ ‏"‏ ‏.‏ فَقَالُوا يَا رَسُولَ اللَّهِ كَيْفَ نُقْسِمُ وَلَمْ نَشْهَدْ قَالَ ‏"‏ فَتُبْرِئُكُمْ يَهُودُ ‏"‏ ‏.‏ قَالُوا يَا رَسُولَ اللَّهِ إِذًا تَقْتُلُنَا ‏.‏ قَالَ فَوَدَاهُ رَسُولُ اللَّهِ صلى الله عليه وسلم مِنْ عِنْدِهِ ‏.‏