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.
muslim:2908bʿAbdullāh b. ʿUmar b. Abān And Wāṣil b. ʿAbd al-Aʿlá > Muḥammad b. Fuḍayl > Abū Ismāʿīl al-Aslamī > Abū Ḥāzim > Abū Hurayrah

The world would not come to an end until a day would come to the people on which the murderer would not know as to why he has killed and the slain would not know as to why he has been murdered. It would be said: Why would It happen? To which he replied: It would be because of general massacre and bloodshed. And the slaughterers and the slain would be in Fire, and in the narration of Ibn Aban, the name of Abu Isma'il has been mentioned.  

مسلم:٢٩٠٨bوَحَدَّثَنَا عَبْدُ اللَّهِ بْنُ عُمَرَ بْنِ أَبَانَ وَوَاصِلُ بْنُ عَبْدِ الأَعْلَى قَالاَ حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ عَنْ أَبِي إِسْمَاعِيلَ الأَسْلَمِيِّ عَنْ أَبِي حَازِمٍ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ وَالَّذِي نَفْسِي بِيَدِهِ لاَ تَذْهَبُ الدُّنْيَا حَتَّى يَأْتِيَ عَلَى النَّاسِ يَوْمٌ لاَ يَدْرِي الْقَاتِلُ فِيمَ قَتَلَ وَلاَ الْمَقْتُولُ فِيمَ قُتِلَ فَقِيلَ كَيْفَ يَكُونُ ذَلِكَ قَالَ الْهَرْجُ الْقَاتِلُ وَالْمَقْتُولُ فِي النَّارِ وَفِي رِوَايَةِ ابْنِ أَبَانَ قَالَ هُوَ يَزِيدُ بْنُ كَيْسَانَ عَنْ أَبِي إِسْمَاعِيلَ لَمْ يَذْكُرِ الأَسْلَمِيَّ