Sahih al-Bukhari, Volume 8, Book 73, Hadith 63 (USC-MSA) ⓘ
Narrated Abu Huraira: Allah's Messenger said, "Time will pass rapidly, good deeds will decrease, and miserliness will be thrown (in the hearts of the people), and the Harj (will increase)." They asked, "What is the Harj?" He replied, "(It is) killing (murdering), (it is) murdering (killing).
حَدَّثَنَا أَبُو الْيَمَانِ، أَخْبَرَنَا شُعَيْبٌ، عَنِ الزُّهْرِيِّ، قَالَ أَخْبَرَنِي حُمَيْدُ بْنُ عَبْدِ الرَّحْمَنِ، أَنَّ أَبَا هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " يَتَقَارَبُ الزَّمَانُ وَيَنْقُصُ الْعَمَلُ، وَيُلْقَى الشُّحُّ وَيَكْثُرُ الْهَرْجُ ". قَالُوا وَمَا الْهَرْجُ قَالَ " الْقَتْلُ، الْقَتْلُ ".
also referenced under: Book 78, Hadith 67 (In-Book) & Hadith 6037 (DarusSalam)