It is narrated from Sayyiduna Hudhayfah bin Yaman (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was asked about the Day of Judgment. He (peace and blessings be upon him) said: The knowledge of the Day of Judgment is with my Lord; He will manifest it at its appointed time. However, I will tell you some of its signs and what will happen before it. Before the Day of Judgment, tribulations will appear and there will be Harj. The Companions said: O Messenger of Allah! We understand the meaning of tribulations, but what is meant by Harj? He (peace and blessings be upon him) said: In the language of the Abyssinians, it means killing. And (the third sign is that) people will become so indifferent and unconcerned with each other that no one will recognize anyone.