Can we go to a magician only to confirm whether someone is under the influence of magic or not? And where can we find the objects used as magic?
All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
It is Haraam to go to magicians whether it is to know symptoms and signs of magic or its place or anything else. One may go to them to reproach their work and to demonstrate its falsehood, since this is a form of enjoining what is good and forbidding what is bad as the Prophet did when he went to Ibn Sayyad (a Jewish soothsayer who was living at the time of the Prophet ).
There are some signs and indications to magic, and a Muslim can know them by himself. Also, he can seek help of some scholars who treat magic by al-Ruqyah al-Shariyyah (verses of the Qur'an, supplications from the Sunnah).
Among these signs and indications are:
1) one's unexpected change from love to hate,
2) one's excessive distrust, extreme solicitude and ultimate hate of some places or people without some clear reason,
3) one's absent-mindedness and unusual glances,
4) deserting people, and
5) one's thinking that he is doing something but, in fact, he is not.
In addition to other signs that differ from one person to another.
Allah knows best.
Mofti: The Fatwa Center at Islamweb