Musnad Ahmad 31:719

Affan narrated to us, Wuhayb narrated to us, Dawud narrated to us, from Abu Nadra, from Abu Sa’id, or from Jabir ibn Abdullah: "The Messenger of Allah (peace and blessings of Allah be upon him) fell ill, so Gabriel came to him and said: 'In the name of Allah, I perform ruqyah upon you from everything that harms you, from every envious person, and [may] Allah heal you.'"