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.
nasai-kubra:3571Muḥammad b. Ismāʿīl b. Ibrāhīm > Yazīd > Saʿīd > Qatādah > al-Ḥasan > Abū Mūsá al-Ashʿarī

[Machine] From the Prophet ﷺ, "When two Muslims face each other with their swords, and one of them kills his companion, then both of them are in Hell."  

الكبرى للنسائي:٣٥٧١أَخْبَرَنِي مُحَمَّدُ بْنُ إِسْمَاعِيلَ بْنِ إِبْرَاهِيمَ قَالَ حَدَّثَنَا يَزِيدُ قَالَ أَخْبَرَنَا سَعِيدٌ عَنْ قَتَادَةَ عَنْ الْحَسَنِ عَنْ أَبِي مُوسَى الْأَشْعَرِيِّ

عَنِ النَّبِيِّ ﷺ «إِذَا تَوَاجَهَ الْمُسْلِمَانِ بِسَيْفَيْهِمَا فَقَتَلَ أَحَدُهُمَا صَاحِبَهُ فَهُمَا فِي النَّارِ» مِثْلَهُ سَوَاءً  


See similar narrations below:

Collected by Nasāʾī, Bayhaqī
nasai:4118Muḥammad b. Ismāʿīl b. Ibrāhīm > Yazīd > Sulaymān al-Taymī > al-Ḥasan > Abū Mūsá

The Prophet [SAW] said: "If two Muslims confront each other with swords, and one kills the other, they will both be in Hell." It was said: "O Messenger of Allah, (we understand about) the killer, but what about the one who is killed?" He said: "He wanted to kill his companion."  

النسائي:٤١١٨أَخْبَرَنِي مُحَمَّدُ بْنُ إِسْمَاعِيلَ بْنِ إِبْرَاهِيمَ عَنْ يَزِيدَ عَنْ سُلَيْمَانَ التَّيْمِيِّ عَنِ الْحَسَنِ عَنْ أَبِي مُوسَى

عَنِ النَّبِيِّ ﷺ قَالَ إِذَا تَوَاجَهَ الْمُسْلِمَانِ بِسَيْفَيْهِمَا فَقَتَلَ أَحَدُهُمَا صَاحِبَهُ فَهُمَا فِي النَّارِ قِيلَ يَا رَسُولَ اللَّهِ هَذَا الْقَاتِلُ فَمَا بَالُ الْمَقْتُولِ قَالَ أَرَادَ قَتْلَ صَاحِبِهِ  

nasai:4121Muḥammad b. al-Muthanná > al-Khalīl b. ʿUmar b. Ibrāhīm from my father > Qatādah > al-Ḥasan > Abū Bakrah

"The Messenger [SAW] said: 'If two Muslims meet (and fight) with their swords and one of them kills the other, the killer and the slain will both be in Hell.'"  

النسائي:٤١٢١أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى قَالَ حَدَّثَنَا الْخَلِيلُ بْنُ عُمَرَ بْنِ إِبْرَاهِيمَ قَالَ حَدَّثَنِي أَبِي قَالَ حَدَّثَنِي قَتَادَةُ عَنِ الْحَسَنِ عَنْ أَبِي بَكْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا الْتَقَى الْمُسْلِمَانِ بِسَيْفَيْهِمَا فَقَتَلَ أَحَدُهُمَا صَاحِبَهُ فَالْقَاتِلُ وَالْمَقْتُولُ فِي النَّارِ  

nasai:4123Aḥmad b. ʿAbdah > Ḥammād > Ayyūb And Yūnus Wa-al-ʿAlāʾ b. Ziyād > al-Ḥasan > al-Aḥnaf b. Qays > Abū Bakrah

"The Messenger of Allah [SAW] said: 'If two Muslims fight with swords, and one of them kills the other, then the killer and the slain will both be in Hell.'"  

النسائي:٤١٢٣أَخْبَرَنَا أَحْمَدُ بْنُ عَبْدَةَ عَنْ حَمَّادٍ عَنْ أَيُّوبَ وَيُونُسَ وَالْعَلاَءِ بْنِ زِيَادٍ عَنِ الْحَسَنِ عَنِ الأَحْنَفِ بْنِ قَيْسٍ عَنْ أَبِي بَكْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا الْتَقَى الْمُسْلِمَانِ بِسَيْفَيْهِمَا فَقَتَلَ أَحَدُهُمَا صَاحِبَهُ فَالْقَاتِلُ وَالْمَقْتُولُ فِي النَّارِ  

bayhaqi:16792Abū Naṣr Muḥammad b. ʿAlī al-Faqīh al-Shīrāzī > Abū Muḥammad Yaḥyá b. Manṣūr > Abū Bakr Muḥammad b. al-Naḍr al-a neighborūdī > Aḥmad b. ʿAbdah al-Ḍabbī > Ḥammād b. Zayd > Ayyūb And Yūnus Wa-al-Muʿallá > al-Ḥasan > al-Aḥnaf b. Qays > Abū Bakrah

When two Muslims confront each other with their swords, both the slayer and the slain are doomed to Hell-Fire. (Using translation from Muslim 2888b)   

البيهقي:١٦٧٩٢أَخْبَرَنَا أَبُو نَصْرٍ مُحَمَّدُ بْنُ عَلِيٍّ الْفَقِيهُ الشِّيرَازِيُّ أنبأ أَبُو مُحَمَّدٍ يَحْيَى بْنُ مَنْصُورٍ ثنا أَبُو بَكْرٍ مُحَمَّدُ بْنُ النَّضْرِ الْجَارُودِيُّ ثنا أَحْمَدُ بْنُ عَبْدَةَ الضَّبِّيُّ ثنا حَمَّادُ بْنُ زَيْدٍ ثنا أَيُّوبُ وَيُونُسُ وَالْمُعَلَّى عَنِ الْحَسَنِ عَنِ الْأَحْنَفِ بْنِ قَيْسٍ عَنْ أَبِي بَكْرَةَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ إِذَا الْتَقَى الْمُسْلِمَانِ بِسَيْفَيْهِمَا فَقَتَلَ أَحَدُهُمَا صَاحِبَهُ فَالْقَاتِلُ وَالْمَقْتُولُ فِي النَّارِ