Conditions for the person (patient) recieving Ruqyah:
Hasad (destructive envy) means wishing that a blessing that Allaah has bestowed on the envied person be taken away.
The evil eye is a look that is believed to be able to cause injury or bad luck for the person at whom it is directed for reasons of envy or dislike, with the intention of inflicting injury or bad luck by such an envious or ill-wishing look.
and its existence is confirmed by the Qur'an and Sunnah and is agreed upon by the scholars. It is a reality and a truth, and it affects a person only by Allah's will.
is where the demon (jinn, evil spirit) takes control of the human body and controls the mind of the person into performing actions that one may not perform in normal circumstances.