Can a person be cured with the Quran, and how can we be sure that the healer is treating with it and not with jinn, and is it permissible to contact jinn for good purposes?

The Quran is a cure for many ailments, and treatment with it can be done by reciting it and pondering its meanings, or by reciting its verses and chapters over the sick person, or by writing them in a vessel or on paper and then washing them with water for the patient to drink, or by reciting directly onto water for the patient to drink from or wipe painful areas with. Anyone can perform this treatment for themselves and their families. There is no objection to seeking treatment from a righteous religious scholar, especially when afflicted by magic or the evil eye.

The one who treats with the Quran should not be mistaken for charlatans and sorcerers. The healer only uses the Quran and prophetic supplications. As for the sorcerer and charlatan, they use incomprehensible incantations and names of devils, and often ask for the mother's or father's name or something belonging to the afflicted person (like hair and nails). They also offer sacrifices to jinn and demand strange things like hammering nails or using specific types of incense. A Muslim should not contact jinn, as this is not from the guidance of the Prophet (peace be upon him) and his companions.