Abu Musa reported: The Messenger of Allah, peace and blessings be upon him, said, “Verily, before the Hour will be an upheaval.” I said, “O Messenger of Allah, what is the upheaval?” The Prophet said, “Killing.” Some of the Muslims said, “O Messenger of Allah, right now we fight many idolaters every year.” The Prophet said, “It is not that you will fight the idolaters, but rather you will fight each other, until a man kills his neighbor, the son of his aunt, and his close relatives.” Some people said, “O Messenger of Allah, will we be reasonable on that day?” The Prophet said, “No, reason will be taken away from most people in that era, and insignificant people will remain who do not use their reason.”
Source: Sunan Ibn Mājah 3959
Grade: Sahih (authentic) according to Al-Albani
عن أبي موسى قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِنَّ بَيْنَ يَدَيْ السَّاعَةِ لَهَرْجًا قُلْتُ يَا رَسُولَ اللَّهِ مَا الْهَرْجُ قَالَ الْقَتْلُ فَقَالَ بَعْضُ الْمُسْلِمِينَ يَا رَسُولَ اللَّهِ إِنَّا نَقْتُلُ الْآنَ فِي الْعَامِ الْوَاحِدِ مِنْ الْمُشْرِكِينَ كَذَا وَكَذَا فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَيْسَ بِقَتْلِ الْمُشْرِكِينَ وَلَكِنْ يَقْتُلُ بَعْضُكُمْ بَعْضًا حَتَّى يَقْتُلَ الرَّجُلُ جَارَهُ وَابْنَ عَمِّهِ وَذَا قَرَابَتِهِ فَقَالَ بَعْضُ الْقَوْمِ يَا رَسُولَ اللَّهِ وَمَعَنَا عُقُولُنَا ذَلِكَ الْيَوْمَ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَا تُنْزَعُ عُقُولُ أَكْثَرِ ذَلِكَ الزَّمَانِ وَيَخْلُفُ لَهُ هَبَاءٌ مِنْ النَّاسِ لَا عُقُولَ لَهُمْ
3959 سنن ابن ماجه كتاب الفتن باب التثبت في الفتنة
3213 المحدث الألباني خلاصة حكم المحدث صحيح في صحيح ابن ماجه