Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "The Hour will not be established until the sun rises from the West: and when the people see it, then whoever will be living on the surface of the earth will have faith, and that is (the time) when no good will it do to a soul to believe then, if it believed not before." (6.158)
USC-MSA web (English) reference: Vol. 6, Book 60, Hadith 159
Arabic reference: Book 65, Hadith 4635