Musnad Ahmad 27:1398

'Affan narrated to us, Wahib narrated to us, Musa ibn 'Uqbah narrated to us, Salim narrated to me, regarding the vision of the Messenger of Allah, peace and blessings of Allah be upon him, concerning the epidemic of Medina, from 'Abdullah ibn 'Umar, from the Prophet, peace and blessings of Allah be upon him, who said: "I saw a black woman with disheveled hair who left Medina until she stood at Mahya'ah. I interpreted that its epidemic was transferred to Mahya'ah," and it is al-Juhfah.