When I visited one of the spiritual healers, he said to me: Write your name, and your mother's name, and come tomorrow. When I came to him the next day he said: You are suffering from such and such sickness, and your cure is with such and such. What do you think of those people? A – It is obvious that he who applies this for healing, deals with the Jinn, and claims the knowledge of the unseen. It is not permissible to seek healing from nor to consult him. The Prophet (peace be upon him) condemned this sort of person saying: “He who visits a fortune-teller and consults him, no prayer of his would be accepted for 40 days.” (Sahih Muslim, no. 2230) The Prophet (peace be upon him) forbade visiting, consulting or believing soothsayers, fortune-tellers or sorcerers. He (peace be upon him) said: “He who visits a (sorcerer) and believes what he says, has certainly denied what was revealed to Muhammad.” (Abu Dawood, no. 3904) Whoever lays claims to the knowledge of the unseen through geomancy, or through asking a patient what is his name, or his mother's name is, or the names of his relatives, is a soothsayer, or a sorcerer, whom the Prophet (peace be upon him) forbade consulting and believing. – Sheikh Abdul Aziz Bin Baz; Fatawa Islamiyah, vol. 1, pg. 46 __
