The Glorious Qur’an is the living miracle of the Prophet Muhammad (peace be upon him) bestowed by Allah. It is the revered divine book revealed to the Prophet Muhammad (peace be upon him) through the angel Jibril (Gabriel). More than 1400 years have passed and nobody from Arabs or non-Arabs has been able to produce such sort of unique literature. No book can approach the Glorious Qur’an in the beauty of diction, style and in the grandeur of its contents. The Glorious Qur’an is miraculous in many ways and aspects, including its eloquence;, the information about the past, present and future, and the stories of the Prophets and their nations that could not be sought through common human sources. The Glorious Qur’an contains many predictions that came true in the lifetime of the Prophet (peace be upon him).
The Glorious Qur’an introduces principles of faith, law, ethical values and transactions. Not only this, but it includes many clear scientific facts that were discovered only very recently whilst the Glorious Qur’an has talked about them before more than 1400 years in a specific and patent manner.
The Arabs of the 6th and 7th centuries CE were masters of the Arabic language. Eloquence and rhetoric were their instinct and nature. Composition of the best standard poems was the virtue of which they boasted, all found expression through poetry and literature. It was in this atmosphere that there appeared on the scene our beloved Prophet Muhammad (peace be upon him), who presented before them an inimitable oration and declared it to be the Word of Allah, challenging the eloquent and expressive poets of his time and all times. He challenged them to compose something similar to the Glorious Qur’an, as Allah says in this regard:
Say, “If mankind and the jinn gathered in order to produce the like of this Qur’an, they could not produce the like of it, even if they were to each other assistants.” (Al-Israa’ 17:88)
Such challenge was an amazing thing for Arabs, especially when it came from a person who had never learned reading or writing, and never recited even a single piece of poetry on any occasion, and was totally far from composing any poetry. He did not even remember the verses of other poets. This challenge has been repeated several times in the Glorious Qur’an, which was the greatest challenge to their literary expertise. But no one stepped forward to accept the challenge of producing the like of the Glorious Qur’an. That’s why it is a great proof that asserts the divine nature of the Glorious Qur’an. 
The Difference Between Mu`ajizah and Karamah
The Prophets and Messengers (peace be upon them all) were supported by Allah, the Almighty, who showed some extraordinary and abnormal deeds on their hands. This was to inform the people that the one at whose hand the miracle was shown has been sent by Allah. Such a deed is called Mu`ajizah. Karamah is also a sort of extraordinary action that is shown on the hands of a pious person, who is neither a Messenger nor a Prophet but Allah makes such unusual things occur at their hands as a kind of favor from Him. These are called Karamah. Only the devoted and pious people are honored with Karamah by the permission of Allah. So, if an extraordinary thing is shown by a Messenger or Prophet, it is called a Mu`ajizah, but if a pious and devoted person has some supernatural action, it is called Karamah. Moreover, Karamah is neither accompanied by a challenge or a claim of Prophethood, contrary to the miracle of a Prophet that was always followed by the challenge and claim of Prophethood. In fact, Karamah is a result of true love and imitation of the Prophet Muhammad (peace be upon him). 
In addition, sometimes some supernatural actions are shown by some Hindu monks and priests who practice very hard spiritual exercises throwing themselves in severe difficulties, in order to get some miracles while they are non-believers, such people are fooled by the devil who misleads them and their followers with some false and momentary miracles, but this will never benefit them on the Day of Judgment. Almighty Allah says:
[Some] faces, that Day, will be humbled, Working [hard] and exhausted. They will [enter to] burn in an intensely hot Fire. (Al-Ghashiyah 88:2-4)
 Majallat al-Buhuth al-Islamiyyah, 30th edition, 1411 A.H.
 Encyclopedia of Islamic Concepts, definition of Al-Karamah, an article prepared by Dr. Prof, `Abdus-Salam Muhammad `Abduh , The Supreme Council for Islamic Affairs, Arab Republic of Egypt, 2009.