Question 350: What is the ruling on soothsayers and diviners who claim to have knowledge of all things? Sometimes we ask them about a lost item and they may give us true information about it.
Answer: It is not permissible to visit, consult, or believe soothsayers and diviners. The Prophet (peace be upon him) stated, If anyone resorts to a diviner or a soothsayer and believes in what he says, then he will be a disbeliever in what was revealed to Muhammad. He (peace be upon him) also stated, Anyone who visits a diviner and asks him about anything, his prayers will not be accepted for forty nights. Related by Muslim in his Saheeh (authentic) Book of Hadeeth. By their claim of the knowledge of the Ghayb (the Unseen), diviners and soothsayers have disbelieved in Allaah the Almighty and left the pale of Islaam, as knowledge of the Ghayb is exclusive to Allaah (Glorified and Exalted be He). He (Glorified be He) states, Say: “None in the heavens and the earth knows the Ghayb (Unseen) except Allaah” He (Glorified and Exalted be He) also states, “(He Alone is) the All-Knower of the Ghayb (Unseen), and He reveals to none His Ghayb (Unseen).” Except to a Messenger (from mankind) whom He has chosen (He informs him of unseen as much as He likes)... read more here.