It is narrated from Sayyiduna Anas (may Allah be pleased with him) as a marfu' report that the Messenger of Allah (peace and blessings be upon him) said: "Ruqyah is only for the evil eye, a venomous sting, or blood that does not stop."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 729