Now, how do you feel?
Who don’t believe, then listen to the following "rouqya" (i.e. verses and prayers used for healing), it has certain words from Quran used to expel demons from homes and from humans bodies too.
During the listening, if you felt pricking in your fingers, means the demons are suffering..
- The book can be used to treat the sick
Let's test and see..
Allâh! Lâ ilâha illa Huwa (none has the right to be worshipped but He), the Ever Living, the One Who sustains and protects all that exists. Neither slumber, nor sleep overtake Him. To Him belongs whatever is in the heavens and whatever is on earth. Who is he that can intercede with Him except with His Permission? He knows what happens to them (His creatures) in this world, and what will happen to them in the Hereafter . And they will never compass anything of His Knowledge except that which He wills. His Kursî extends over the heavens and the earth, and He feels no fatigue in guarding and preserving them. And He is the Most High, the Most Great. [This Verse 2:255 is called Ayat-ul-Kursî.]— (2:255)
Say: "I seek refuge with (Allâh) the Lord of the daybreak, (1) "From the evil of what He has created; (2) "And from the evil of the darkening (night) as it comes with its darkness; (or the moon as it sets or goes away) (3) "And from the evil of those who practise witchcrafts when they blow in the knots, (4) "And from the evil of the envier when he envies." (113:1-5)
Say: "I seek refuge with (Allâh) the Lord of mankind, (1) "The King of mankind (2) "The Ilâh (God) of mankind, (3) "From the evil of the whisperer (devil who whispers evil in the hearts of men) who withdraws (from his whispering in one's heart after one remembers Allâh), (4) "Who whispers in the breasts of mankind, (5) "Of jinn and men." (114:1-6)
Some may don’t know that Quran is a treasure for his keeper, ALLAH's mercy on those who memorize his book that they never suffer from Alzheimer, they won't forget or lose their minds.
And this to protect the words that they know, because if they start to forget they may start mixing the verses or teaching their students wrongly, but ALLAH protects his slaves especially those who memorize his book.
Sheikh Abdulaziz bin Saleh, born in 1911, praying in Madinah Mosque (1984), in age of 73, reading Quran and making Dua'a from his memory..
Knowing he used to read the whole Quran in daily prayers during month of Ramadan
And verily, Allah looked towards the people of the world and He showed hatred for the Arabs and the non-Arabs, but with the exception of some remnants from the People of the Book. And He (further) said: I have sent thee (the Holy Prophet) in order to put you to test and put (those to test) through you. And I sent the Book to you which cannot be washed away by water, so that you may recite it while in the state of wakefulness or sleep. (Book #040, Hadith #6853)
 Bilal Prayer, Quran, http://www.bilal-prayer.com/Quran.html