It is narrated from Sayyiduna Imran bin Husayn (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "There is no ruqyah (incantation) except for the evil eye or a venomous sting."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15679