Musnad Ahmad Hadith 3619

A red wind blew in Koofah, and there came a man who had nothing to say except: O ‘Abdullah bin Mas'ood, the Hour has come. He sat up, as he had been reclining, and said: The Hour will not begin until shares of inheritance are not distributed and there is no rejoicing over war booty. He said. An enemy will gather against the people of Islam and the people of islam will gather against them... And he narrated the hadeeth. The cry will reach therm: The Dajjal has taken your place among your offspring. So they will throw aside whatever is in their hands and will go there, sending ten horsemen ahead of them as scouts. The Messenger of Allah (ﷺ) said: "I know their names, and the names of their fathers, and the colours of their horses. They will be the best horsemen on the face of the earth at that time, or among the best horsemen on the face of the earth at that time."