Sahih Bukhari
Interpretation of Dreams
Volume: 009 / Book Number: 087 / Hadith Number: 162
Narrated 'Abdullah bin 'Umar:
concerning the dream of the Prophet in Medina: The Prophet 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."