I knew that Jinn could possess people - I had read accounts on Muslim forums of forum members who were possessed/attacked by Jinn.
To me, it seems that since Jinn can possess humans, many mental health diseases, such as schizophrenia, bipolar disorder and dissociative identity disorder can actually be attributed to Jinn.
I wonder what medical breakthroughs have resulted in the Muslim world as a result of the study of Jinn and exercising Jinn possession in people who, in the West, would be labeled as mentally unbalanced?
Hopefully, many Muslim universities are devoting their full resources to discovering Jinn which, to my knowledge, have still managed to elude scientists. It is possible, after all, that all the cultures outside of Islam that believe in the supernatural are actually the result of Jinn occasionally manifesting their presence in this world - if that is possible.
The Jinn are beings created with free will, living on earth in a world parallel to mankind. The Arabic word Jinn is from the verb 'Janna' which means to hide or conceal. Thus, they are physically invisible from man as their description suggests. This invisibility is one of the reasons why some people have denied their existence. However, (as will be seen) the affect which the world of the Jinn has upon our world, is enough to refute this modern denial of one of Allah's creation. The origins of the Jinn can be traced from the Qur'an and the Sunnah. Allah says:
"Indeed We created man from dried clay of black smooth mud. And We created the Jinn before that from the smokeless flame of fire"
[Surah Al-Hijr 15:26-27]
Thus the Jinn were created before man. As for their physical origin, then the Prophet (salAllahu alayhi wasalam) has confirmed the above verse when he said: "The Angels were created from light and the Jinn from smokeless fire" [1]. It is this description of the Jinn which tells us so much about them. Because they were created from fire, their nature has generally been fiery and thus their relationship with man has been built upon this. Like humans, they too are required to worship Allah and follow Islam. Their purpose in life is exactly the same as ours, as Allah says:
"I did not create the Jinn and mankind except to worship Me"
[Surah Ad-Dhariyat, 51:56]
Jinns can thus be Muslims or non-Muslims. However, due to their fiery nature the majority of them are non-Muslims. All these non-Muslim Jinns form a part of the army of the most famous Jinn, Iblis- the Shaitan[2]. Consequently, these disbelieving Jinns are also called Shaitans (devils). As for the Jinns who become Muslims, then the first of them did so in the time of the Prophet (salAllahu alayhi wasalam) when a group of them were amazed by the recitation of the Qur'an. Allah orders the Prophet to tell the people of this event:
"Say (O' Muhammad): It has been revealed to me that a group of Jinn listened and said; 'Indeed we have heard a marvellous Qur'an. It guides unto righteousness so we have believed in it, and we will never make partners with our lord'"
[Surah Al-Jinn, 72:1-2]
In many aspects of their world, the Jinn are very similar to us. They eat and drink, they marry, have children and they die. The life span however, is far greater then ours. Like us, they will also be subject to a Final Reckoning by Allah the Most High. They will be present with mankind on the Day of Judgement and will either go to Paradise or Hell.
Abilities
That which clearly distinguishes the Jinn from mankind, are their powers and abilities. Allah has given them these powers as a test for them. If they oppress others with them, then they will be held accountable. By knowing of their powers, we can often make sense of much of the mysteries which go on around us. One of the powers of the Jinn, is that they are able to take on any physical form they like. Thus, they can appear as humans, animals trees and anything else. Over the last few years the interest in the subject of aliens and UFO's has become heightened. Programmes such as the X-files and the Outer limits have increased the popularity of the theory that aliens exist. Thousands of people have sighted strange looking creatures all over the world. These sightings however, have still not proven substantially that aliens exist. Rather - and it seems more plausible all the sightings of such creatures were just Jinns parading in different forms. So the next time you see something that looks like E.T, its most probably just a wicked Jinn trying to scare and confuse you!
If a person does become possessed, then the name of Allah has to be used in expelling the Jinn. If we look at the practice of the Prophet and his companions, we find many duas (supplications) to exorcise the Jinn. All these duas invoke Allah to help the possessed person. How contrary this is to many modern-day exorcists. Many exorcists, Muslim and non-Muslim, often invoke the names of others besides Allah to exorcise the Jinn[5]. When the Jinn does leave, these people believe that their way was successful. However, this is a ploy of the Jinn, as it knows that if it obeys the exorcist, then it has succeeded in making him worship others besides Allah i.e. commit shirk. The Jinn often returns when the exorcist leaves, as it knows that nothing except the words of Allah can stop it from oppressing others.
http://www.geocities.com/mutmainaa/belief/jinn.html