Sahih Muslim Book 26, Hadith Number 5442.

Chapter : The excellence of curing (with the help of incantation) the influence of the evil eye and small pustules and the poison (especially of snake and scorpion).

‘Abd al-Rahman b. al-Aswad reported on the authority of his father: I asked ‘Aisha about incantation. She said: Allah’s Messenger (may peace be upon him) had granted its sanction to the members of a family of the Ansir for incantation in curing every type of poison.