The ruling on going to an unknown shaykh to treat those afflicted with magic

Question:
Honorable Shaykh, we have a shaykh who treats those who are possessed and those who are afflicted with magic. He first orders them to pray, and he tells those who come to him that Allah is the Healer, and that we are merely calling upon Him. However, he writes small papers for the patient to burn for inhalation, and he writes down barriers and poisons. What is your opinion on going to someone like that?

Answer:
One should not go to an unknown person, or to a person of no standing. One should not go to a person known for soundness of creed, knowledge, and trustworthiness. Anyone who says, "I treat," may treat to provide relief. No, the unknown one may not provide relief, because he may pretend to have tawhid (the oneness of Allah), pray, and invoke the name of Allah, but this is a cover for the evil he possesses. Also, we do not know what is in the writing. We must read it and examine it; it may contain talismans. The bottom line is that if he is unknown and his identity is not known...
...or if he is unknown in that his identity is known, but he is unknown in his knowledge—no one knows who taught him, and no one knows about his creed—then he is not to be trusted, and one is not to be satisfied with him. Yes, because the matter is a matter of creed, religion, and faith. A person does not differentiate in his religion, faith, and creed, nor does he waste them with the unknown, the greedy, and the sorcerers. Yes.