From Sahih Bukhari (Hadith 7039):
Narrated `Abdullah bin `Umar:concerning the dream of the Prophet (ﷺ) in Medina: The Prophet (ﷺ) said, "I saw (in a dream) a black woman with unkempt hair going out of Medina and settling at Mahai'a. I interpreted that as (a symbol of) the epidemic of Medina being transferred to Mahai'a, namely, Al-Juhfa
Reference: Bukhari 7039