Ruling on seeking the help of the jinn
Question

                Some people, when they want to pray against a person, say, “O jinn, seize him, O ‘ifreet seize him; may seven (jinn) seize you, may they break your back and suck your blood.” What is the ruling on such words?
Praise be to Allah.This 
          is shirk, and is a type of seeking the help of the jinn. Some people 
          do this because they have fear of the jinn in their hearts and they 
          are afraid of their power, and because their hearts are devoid of sincere 
          faith and trust in Allaah. So they are content with these illusions 
          and they seek the help of created beings which are not able to bring 
          benefit or ward off harm for themselves, let alone for anyone else.
 When Shaykh ‘Abd al-‘Azeez ibn Baaz (may Allaah have 
          mercy on him) was asked about this matter, he said:
“This is even more abhorrent than associating others in worship with 
          Allaah. We must not do this, we must beware of it, we must advise others 
          not to do it and we must denounce those who do it. If a person is known 
          to commit such actions of shirk, it is not permissible to let him marry 
          a Muslim woman, to eat meat slaughtered by him, to pray over him [the 
          funeral prayer] or to pray behind him, until he announces his repentance 
          to Allaah, which includes devoting his du’aa’ and worship sincerely 
          and purely to Allaah alone.”
(Iqaamat al-Baraaheen ‘ala Hukm 
          man istaghaatha bi ghayr Allaah, p. 30)
 The Standing Committee for Academic Research and 
          Issuing Fatwas has issued a fatwa stating that:
“seeking the help of the jinn and turning to them to meet one’s needs 
          by harming someone or benefitting him is shirk, because it is a kind 
          of worship directed to someone other than Allaah. It is a kind of benefitting 
          from the jinn to fulfil one’s needs, in return for which the jinn benefits 
          by having the human’s veneration and trust, and being called upon by 
          him to fulfil his desires. Allaah says (interpretation of the meaning):
‘And 
          on the Day when He will gather them (all) together (and say): “O you 
          assembly of jinn! Many did you mislead of men,” and their Awliyaa’ (friends 
          and helpers) amongst men will say: “Our Lord! We benefited one from 
          the other, but now we have reached our appointed term which You did 
          appoint for us.” He will say: “The Fire be your dwelling place, you 
          will dwell therein forever, except 
          as Allaah may will. Certainly your Lord is All-Wise, All-Knowing.” 
          
And thus We do make the Zaalimoon 
          (polytheists and wrongdoers) Awliyaa’ (supporters and helpers) of one 
          another (in committing crimes), because of that which they used to earn’ 
          [al-An’aam 6:128-129] 
And Allaah says (interpretation of the meaning): 
‘And 
          verily, there were men among mankind who took shelter with the males 
          among the jinn, but they (jinn) increased them (mankind) in sin and 
          transgression’ [al-Jinn 72:6] 
When a human seeks the help of the jinn, to cause harm to another 
          or to protect him from the evil of one whose evil he fears, all of this 
          is shirk, and whoever is in this state, his prayer and fasting mean 
          nothing. Allaah says (interpretation of the meaning): 
“If 
          you join others in worship with Allaah, (then) surely, (all) your deeds 
          will be in vain, and you will certainly be among the losers” [al-Zumar 
          39:65] 
Whoever is known to do such things, cannot be prayed over if he dies, 
          his funeral cannot be attended, and he cannot be buried in the Muslim 
          graveyard.”  
(Fataawa al-Lajnah al-Daa’imah, 
          1/407-408) 
 The jaahili (ignorant) nature of their seeking the 
          help of the jinn and putting their trust in them is highlighted in the 
          words of shirk that they utter, such as: 
“By the help of Allaah and you; I am under Allaah’s care and yours; 
          I have no one except Allaah and you; I am Allaah’s slave and yours; 
          I put my trust in Allaah and in you; this is from Allaah and from you; 
          I have Allaah in heaven and you on earth,” etc. 
 Undoubtedly these phrases are expressions of shirk, 
          because they make a created being the rival of the Creator. Exalted 
          be our Lord far above that. 
 They even call upon Jibreel (peace be upon him) and 
          Muhammad  (peace and blessings of 
          Allaah be upon him) instead of Allaah, by uttering words of ignorance 
          such as, “O Jibreel, help me,” and “O Muhammad, intercede for me.” And 
          Allaah is the One Whose help we seek.