The healer should have a good character and an exemplary way of life. In order to heal, he needs ikhlas (sincerity), the right aqidah (doctrine of faith), must follow the model of the Prophet, must be God-fearing, be constant in worship, keep away from forbidden things, have experience, be constant in God-remembrance and have patience. His prayers should already have been answered by Allah in some difficult situations, showing that this person is accepted by Allah, and that he has a certain strenght in faith, for the stronger the faith of the Raqi, the more effective the healing.
The healer should try as much as possible to be only a mediator and concentrate on the Koran, and to let Allah do the work. That is, he focuses on the recitation of the Koran, until he feels how Allah Himself addresses evil with His word. Imagine how Allah hates sorcery and evil-doing Jinn, and try to hate what Allah hates.
The healer should have an understanding of different types of mental disorders and common diseases to make a correct diagnosis. If he can not properly diagnose the presence of 'Ain, Jinn or Magic, other trustworthy professionals should be consulted.
The profession of Raqi - a vocation
There are some people who know about Ruqyah, but few who practice it professionally. The requirements are enourmous: Desperate people and occasionally "cracked characters", are knocking at one's door at any time of the day and night. Devils are constantly struggling to attack the healer and his family. Sorcerers try to avenge themselves because the Raqi destroyed their magic, or who just want to test just how good the Raqi is already.
In addition, the Raqi has to strive not to develop riya (show-off), once he has success and people come in crowds, and to keep his intentions pure for Allah alone, and not to reap praise and adoration, or to make a lot of money when he realizes that many people are willing to pay big sums for getting healed!
Normally, no one is choosing to become a Raqi. Allah is choosing them and imposes on them difficult lessons and hard tests. Often, Raqis were themselves victims of witchcraft, or their family members had problems, and so they were forced to learn about Ruqyah, and they met other healers where they gained experience.
I am not talking about those who are doing Ruqyah purely for business or "occasional Raqis" (as myself). I speak of those whom Allah has called for this profession: They are usually the best of the Ummah! The daily confrontation with the devils let them reach levels of God-reliance, God-fearingness, and God-remembrance, which are hardly attainable for the average Muslim.
Because devils hate the Sunnah, the Raqis often are the ones who practice the Sunnah most sincere. They are also the ones who keep aloof from sectarianism and debates because they know that this is all from Satan.
For the devils, only the personal qualities of the Raqi are important. Allah helps His humble servants and not the arrogant who always believe they know better and deem themselves among the rightly guided group.
One will find that the best Raqis (or rather those whose Ruqyah is blessed by Allah) are those who appear quite insignificant or even contemptible in the eyes of ordinary people. But when the devils see them, they immediately get frightened so that patients (or rather the Jinn in them) often scream and want to run away when they have just seen the Raqi.
It is reported that Ahmad bin Hanbal, the founder of the Hanbali School of Jurisprudence, once sat in the mosque when an acquaintance came in and told that a Jinn had went into Jariyah, the servant of the caliph. Ahmad bin Hanbal prayed to Allah, then gave one of his sandals to the acquaintance and told him to take it and to show it to the servant (or rather the Jinn in her) and say, "Get out of Jariyah, or Imam Ahmad will hit you 70 times (with this sandal)", whereupon the Jinn immediately left the body of the servant. [In Thabaqat Al Hanabilah by Ibnu Abi Ya'la]
Does one want to accuse Imam Ahmad now of having commited bid'ah (innovation) because Rasulallah s.a.w. and the Salaf did not use sandals for Ruqyah? In Ruqyah, only the true qualities of the Raqi count, and precisely these qualities do count on the Last Day too!
In Granada, the Imam of the mosque in the Albaycin once said to a new convert who was somewhat confused because of all the various groups in Islam: "Do not worry about what the Muslims disagree about. Worry about what they agree on!" That was a very wise piece of advice!
All Muslims know that it is a duty to pray five times, to fast, and to keep away from sins etc! And that Allah asks us to be united and not to split into groups [Ali Imran 103]. Therefore, the Ruqyah is also accepted from those who keep far from the debates.
It is a big plus when the Raqi is also familiar with prophetic medicine, especially hijamah (cupping), since Jinn are normally in the bloodstream and where the polluted blood accumulates, which is why they often get sucked out with the blood.
Just as one should keep one's environment and oneself externally clean, one should keep oneself inwardly clean too, e.g. by hijamah, fasting or sweating. This also weakens the Jinn. Therefore, if one notices that the house of the Raqi is not clean, one may leave straight away, let alone if the Raqi himself is dirty or smoking cigarettes.
Sins of all kinds on the side of the Raqi greatly weaken the effect of the Ruqyah and offer the Jinn opportunity to avenge itself. For example, if the Raqi looks at a woman with desire, the Jinn may appear in the dream as a beautiful woman, and beacuse the defense is weakened by sin, the Jinn can harm him. Consequently, a Raqi can allow himself hardly any transgressions, which of course is an excellent training for him but also a very strenuous one.
The Raqi has to prepare himself against being occasionally attacked by sorcerers when they see that their magic got destroyed. The Raqi should therefore often treat oneself, the family and also the house, and quickly recognize when something is wrong. InshaAllah Allah will guard him and send angels to protect him. But, especially as a beginner, one should draw a line and not load up things on one's back that are too heavy. One should not sacrifice the well-being of one's own family for others and bring one's own life out of balance. This also means that one should not get too emotionally involved and not suffer for others, but only try to help them.
In general, a Raqi must comply with a strict program of Dhikr, but especially after each Ruqyah. It is advised to take a Ruqyah bath regularly. For those who only occasionally exercise Ruqyah, it is sufficient to recite the verse of the throne seven times after each canonical prayer for three days.
The Prophet s.a.w. has not protested that the Companions have received a wage for Ruqyah; on the contrary, he has asked for a share. People must understand that a Raqi, who works professionally, invests a lot, and that it is only fair if he is paid for his efforts. The patient must also be made aware that healing comes only from Allah and therefore can not be guaranteed.
As a beginner one should let the people decide how much they want to pay. When becoming more professional, however, one should set fair tariffs for the time invested, but never refuse to treat people who aren't able to pay.
Raqis should organize themselves in their country of residence, share their healing methods and take note of their successes, but also their failures. The more one can prove that Ruqyah often helps with problems in which Western medicine has failed, the better the image of Ruqyah and thus also of Islam itself.
The healer should inform himself well about the complaints and be able to make a diagnosis. In the course of the anamnesis, the patient's history of his previous complaints is analyzed...
Ruqyah - Islamic Exorcism