From Sahih Bukhari (Hadith 7124):
Narrated Anas bin Malik:The Prophet (ﷺ) said, "Ad-Dajjal will come and encamp at a place close to Medina and then Medina will shake thrice whereupon every Kafir (disbeliever) and hypocrite will go out (of Medina) towards him
Reference: Bukhari 7124