The Book of Tribulations and Portents of the Last Hour
كتاب الفتن وأشراط الساعة
(18)Chapter: The Hour Will Not Begin Until A Man Passes By Another Man's Grave And Wishes That He Was In The Place Of The Deceased, Because Of Calamity
Abu Huraira reported Allah’s Messenger (ﷺ) as saying:
By Him in Whose Hand is my life, a time would come when the murderer would not know why he has committed the murder, and the victim would not know why he has been killed.