سنن ابن ماجه

It was narrated that Abu Hurairah said: “I heard the Messenger of Allah (ﷺ) say: ‘The Hour will not begin until the sun rises from the west (i.e. the place of its setting). When it rises, the people will see it, and everyone on (earth) will believe, but that will be at a time when faith will not benefit anyone who did not believe before.’”