Musnad Abu Ya'la al-Mawsili 148:25

Muhammad ibn Abdullah ibn Numayr narrated to us, Yunus ibn Bukayr narrated to us, from Sa'id ibn Maysarah, from Anas ibn Malik, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Seventy prophets have passed by the rock of al-Rawha', barefoot, wearing cloaks, heading toward the Ancient House of Allah. Among them was Musa, the Prophet of Allah (peace and blessings of Allah be upon him)."