Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:16435Abū al-Ḥusayn b. al-Faḍl al-Qaṭṭān> ʿAbdullāh b. Jaʿfar > Yaʿqūb b. Sufyān > Ibn Abū Ūways from my father > Yaḥyá b. Saʿīd > Bashīr b. Yasār a freed slave of Banī Ḥārithah al-Anṣāriyyīn

[Machine] He informed him and he was an elderly knowledgeable sheikh. He had encountered among the people of his town, from the Bani Harithah, companions of the Prophet ﷺ , men such as Rafe' ibn Khadeej, Sahl ibn Abu Hathmah, and Suwaid ibn Al Nu'man. They narrated to him that there was a dispute among them in Bani Harithah ibn Al Harith over a man from the Ansar named Abdullah ibn Sahl, who was killed in Khaybar. The Messenger of Allah ﷺ said to them, "You must swear by fifty men to hold your killer responsible." They replied, "O Messenger of Allah, we did not witness it nor were we present." Bashir claimed that the Messenger of Allah ﷺ then said to them, "The Jews will clear you by fifty." Sufyan ibn 'Uyaynah mentioned this narration from Yahya, differing from the majority in wording.  

البيهقي:١٦٤٣٥وَأَخْبَرَنَا أَبُو الْحُسَيْنِ بْنُ الْفَضْلِ الْقَطَّانُ بِبَغْدَادَ أنبأ عَبْدُ اللهِ بْنُ جَعْفَرٍ ثنا يَعْقُوبُ بْنُ سُفْيَانَ ثنا ابْنُ أَبِي أُوَيْسٍ حَدَّثَنِي أَبِي عَنْ يَحْيَى بْنِ سَعِيدٍ أَنَّ بَشِيرَ بْنَ يَسَارٍ مَوْلَى بَنِي حَارِثَةَ الْأَنْصَارِيِّينَ

أَخْبَرَهُ وَكَانَ شَيْخًا كَبِيرًا فَقِيهًا وَكَانَ قَدْ أَدْرَكَ مِنْ أَهْلِ دَارِهِ مِنْ بَنِي حَارِثَةَ مِنْ أَصْحَابِ النَّبِيِّ ﷺ رِجَالًا مِنْهُمْ رَافِعُ بْنُ خَدِيجٍ وَسَهْلُ بْنُ أَبِي حَثْمَةَ وَسُوَيْدُ بْنُ النُّعْمَانِ حَدَّثُوهُ أَنَّ الْقَسَامَةَ كَانَتْ فِيهِمْ فِي بَنِي حَارِثَةَ بْنِ الْحَارِثِ فِي رَجُلٍ مِنَ الْأَنْصَارِ يُدْعَى عَبْدَ اللهِ بْنَ سَهْلٍ قُتِلَ بِخَيْبَرَ وَأَنَّ رَسُولَ اللهِ ﷺ قَالَ لَهُمْ تَحْلِفُونَ خَمْسِينَ فَتَسْتَحِقُّونَ قَاتِلَكُمْ أَوْ قَالَ صَاحِبَكُمْ قَالُوا يَا رَسُولَ اللهِ مَا شَهِدْنَا وَلَا حَضَرْنَا فَزَعَمَ بَشِيرٌ أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَهُمْ فَتُبْرِئُكُمْ يَهُودُ بِخَمْسِينَ فَذَكَرَهُ وَرَوَاهُ سُفْيَانُ بْنُ عُيَيْنَةَ عَنْ يَحْيَى فَخَالَفَ الْجَمَاعَةَ فِي لَفْظِهِ