Sunan Ibn Majah, Volume 5, Book 36, Hadith 4052 (DarusSalam) ⓘ
It was narrated from Abu Hurairah in a Marfu’ report (meaning, attributed to the Prophet): “Time will pass quickly, knowledge will decrease, miserliness will be cast into people’s hearts, tribulations will appear and there will be much Harj.” They said: “O Messenger of Allah, what is Harj?” He said: “Killing.”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَبْدُ الأَعْلَى، عَنْ مَعْمَرٍ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، يَرْفَعُهُ قَالَ " يَتَقَارَبُ الزَّمَانُ وَيَنْقُصُ الْعِلْمُ وَيُلْقَى الشُّحُّ وَتَظْهَرُ الْفِتَنُ وَيَكْثُرُ الْهَرْجُ " . قَالُوا يَا رَسُولَ اللَّهِ وَمَا الْهَرْجُ قَالَ " الْقَتْلُ " .
also referenced under: Hadith 4052 (Reference) & Book 36, Hadith 127 (In-Book)