Musnad Abu Ya'la al-Mawsili 153:111

Sa'id ibn Yahya ibn Sa'id al-Umawi narrated to us, my father narrated to me, Ibn Jurayj narrated to us, from Musa ibn Uqbah, from Salim, from his father, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "I saw a black woman with disheveled hair who left Medina until she arrived at Mahya'ah, which is al-Juhfah." The Messenger of Allah (peace and blessings of Allah be upon him) interpreted the vision as the plague of Medina moving to al-Juhfah.