The Messenger of Allaah (ï·º) said on the authority of Abu Hurairah - radiyallaahu an'hu:
ÙŠØªÙ‚Ø§Ø±Ø¨Ù Ø§Ù„Ø²Ù‘ÙŽÙ…Ø§Ù†Ù ÙˆÙŠÙ†Ù‚ÙØµÙ العÙÙ„Ù…ÙØŒ وتَظهَر٠الÙÙØªÙŽÙ†ÙØŒ ويÙلقى Ø§Ù„Ø´Ù‘ÙØÙ‘ÙØŒ ÙˆÙŠÙŽÙƒØ«ÙØ±Ù Ø§Ù„Ù‡ÙŽØ±Ù’Ø¬ÙØŒ قيل: يا رسولَ Ø§Ù„Ù„Ù‡ÙØŒ أَيّه هو؟ قال: القَتْل٠القَتْلÙ
'(Before the coming of the Hour) seasons shall become closer, knowledge shall reduce (in the version of Bukhaaree: there shall be less action), tribulations shall become commonplace, there shall be widespread avarice, and there shall be har'j.'
They said: 'O Messenger of Allaah, what is har'j?'
He (ï·º) said: 'Killing! Killing!'
Recorded by Abu Dawud and others; graded saheeh by Al-Albaanee in Saheeh Abee Daawud (4255).