Qur'an is a Cure and Mercy to Mankind (my opinion, everyone should make up their own opinion)
The following is not a fatwa, I do not have a fiqh, I am not into these fancy things. I put information out there from my knowledge of Islamic sciences and medicine so you can take it or leave it. If you choose to refer it to a scholar, etc please feel free as I do not believe they will give you the information I provide. I may have been raised in the west but I clearly know where my roots are. I was encouraged to write this article after signs were clearly shown how much lack of trust we have in Allah, Sunnah and our Deen when it comes to health. It is amazing how we will make the not permissible into permissible without even looking at the words of Allah and His words. Yes Allah and His Messenger (SAW) tells us to seek medical assistance but they also advise us how to select it.
Allah (SWT) said that Prophet Ibrahim (AS) said:
And He feeds me and quenches my thirst and when I fall sick then He (Allah) cures me. (Surah Shu'araa: 80).
Scholars of Tafseer explain that there is a relation between what we eat and drink and falling sick since most people fall ill because of their diet. This could be a reason why Allah (SWT) mentioned that Ibrahim (AS) recognised that Allah is the One who provides sustenance for us but that sickness is due to our own self and this is why sickness is mentioned after food and drink in this verse.
And We sent down of the Qur'an that which is a healing and a mercy to those who believe. (Surah Israa: 82).
A healing to 'those who believe' showing the importance of rectifying our belief and actions such that we are true believers if we want the Qur'an to benefit us.
Ayub (AS) called upon his Lord:
And remember Ayub when he cried to his Lord: Verily, distress has seized me, and You are the Most Merciful of all those who show mercy. (Surah Al-Anbiyaa: 83).
This was when he was inflicted with harm. And the reply came from his Lord:
We answered him and removed the distress that was on him. (Surah Al-Anbiyaa: 84).
O mankind! There has come to you a good advice from your Lord (Qur'an) enjoining all that is good and forbidding all that is evil, and a healing for that which is in your breasts, a guidance and a mercy for the believers. (Surah Yunus: 57).
This shows us that the Qur'an has four benefits:
The best advice.
Cure for our Hearts from all diseases.
Mercy for mankind.
Say: it (the Qur'an) is a healing for those who believe, a guide and healing. (Surah Fusilaat: 44).
The Messenger (SAW) said, "There is no-one who is afflicted by distress and grief, and says: 'Allaahumma inni 'abduka ibn 'abdika ibn amatika naasiyati bi yadika, maada fi hukmika, 'adlun fiy qadaa'ika. As'aluka bi kulli ismin huwa laka sammayta bihi nafsaka aw anzaltahu fi kitaabika aw 'allamtahu ahadan min khalqika aw ista'tharta bihi fi 'ilm il-ghayb 'indaka an taj'al al-Qur'aana rabee' qalbi wa noor sadri wa jalaa' huzni wa dhihaab hammi (O Allaah, I am Your slave, son of Your male and female slaves, my forelock is in Your hand, Your command over me is forever executed and Your decree over me is just. I ask You by every name belonging to You which You have named Yourself with, or revealed in Your Book, or You taught to any of Your creation, or You have preserved in the knowledge of the Unseen with You, that You make the Qur'an the harvest of my heart and the light of my chest, and a departure for my sorrow and a release for my anxiety),' but Allaah will take away his distress and grief, and replace it with joy." He was asked: "O Messenger of Allaah, should we learn this?" He said: "Of course; everyone who hears it should learn it."
And Allaah said:
And if Allaah tests you with affliction, there is none who can remove it but He. (Surah Yunus: 107).
And He will give you victory over them and heal the breasts of a believing people. (Surah Tawbah: 14).
When You sleep Read Aytul Kursi;
Abu Hurairah reported that the Messenger (SAW) said, "When you are about to sleep recite Aytul Kursi till the end of the Verse for there will remain for you a protection from Allaah and no devil will draw to you until morning." (Saheeh Al-Bukhaari).
The Last Two Verses of Surah Baqarah:
The Messenger (SAW) also said, "whoever recites the last two Verses of Soorah al-Baqara at night, those two Verses shall be sufficient for him." (Saheeh Al-Bukhaari and Muslim).
The Last Three Chapters Of The Qur'an
When retiring to his bed every night, the Messenger (SAW) would hold his palms together, blow into them, recite the last three chapters of the Qur'an and then wipe his entire body as much as possible with his hands, beginning with the head and face and then all parts of the body. He would do this three times. (Saheeh Al-Bukhaari and Muslim).
Surah al-Falaq and Surah An-Naas:
Aisha (RA) said, "When someone fell ill from the Prophet's family he did 'nafath' on them (to blow three times over them reciting the two chapters of seeking refuge -Surah al-Falaq and Surah An-Naas). When he himself fell ill, the illness which lead to his death and I would (similarly) do 'nafath' on him and would wipe him with his own hands for it was more blessed that my hands." (Saheeh Muslim).
We Turn To Allah In Distress:
Allah said regarding Dhun Nun when called upon Allah to remove his distress and Allah replied
We answered his call and delivered him from the distress. And thus We do deliver the believers. (Surah Anbiyaa: 87-88).
We Turn To Allah When People Try To Harm Us:
And you will remember what I am telling you, and I leave my affair with Allah, verily Allah is ever watchful over His slaves. (Surah Ghaafir: 44).
Then Allah said:
So Allah saved him from the evils that they plotted (against him), while an evil torment encompassed Fir'aun's people. (Surah Ghaafir: 45).
Surah Faatihah Is A Cure:
It is also a cure when read over the sick. They are cured by the permission of Allah because the Messenger (SAW) said to Abu Sa'eed al-Khudri (RA) after he (Abu Sa'eed al-Khudri) read it over a person who had been bitten by a scorpion and was cured, "How did you come to know that it is a cure?" (Agreed upon, Saheeh al-Bukhaari (2276) with the additional wording, "You have done the right thing.").