Should the one who has been affected by witchcraft see the one who put the spell on him during the ruqyah?
Question

                When someone is sick because of sahr (magic)and he does ruqueyah, is it possible, when the man who read the Coran, that the sick sees who did the sahr to him and how it was done? Some people say that what the sick sees during ruqueyah can be right but it can be also wrong.Those people say that if someone accuse someone else then he has to do tawba because he accuse someone who maybe didn't do anything.Are those people right? Please answer my question because a lot of people have problems because of this.
Praise be to Allah.
    What people have told you, that the one who has been affected 
    by witchcraft should see the one who put the evil eye on him or put a spell 
    on him, may or may not be true. It is not correct to accuse an innocent 
    person of using witchcraft against the victim. What the victim sees during 
    the ruqyah cannot be taken as being correct for sure, rather what usually 
    happens is something imaginary from the Shaytaan that is aimed at stirring 
    up enmity and hatred among people. So we should not pay any attention to it. 
    But even though, according to sharee’ah, such things cannot be relied on, 
    that does not mean that we should not take precautions against those whom it 
    is feared may cause harm through witchcraft or the evil eye etc, without 
    that implying any accusation without proof or causing any feeling of 
    enmity. 

    This accusation is very serious because it may be tantamount 
    to an accusation of kufr, and not just an accusation of causing harm. That 
    is because the practitioner of witchcraft is either a kaafir or an evildoer. 
    The ruling varies according to the way in which he practices witchcraft. 

    Shaykh Ibn ‘Uthaymeen said in his commentary on the hadeeth, 
    “Avoid the seven things which doom a person to Hell: associating others with 
    Allaah, witchcraft…”: 

    The word sihr (witchcraft) is one of the actions that doom a 
    person to Hell. The apparent meaning of the words of the Prophet SAWS (peace 
    and blessings of Allaah be upon him) is that it makes no difference if that 
    is done through the devils or by means of medicines and potions. 

    Because if it is done through the devils, that can only be 
    done by associating them in worship with Allaah, which comes under the 
    heading of shirk (associating others with Allaah). If it is other than that, 
    it is also a major sin, because witchcraft is one of the worst crimes that 
    can be committed against the sons of Adam. It adversely affects the 
    spiritual and worldly affairs of the victim, and causes him anxiety, thus 
    making him like an animal. Indeed it is even worse than that, because 
    animals were created like that, but if a human being is diverted from his 
    true, sound nature, this causes hardship and anxiety to an extent which only 
    Allaah knows. Hence witchcraft comes second only to shirk in this list of 
    grave sins. 

    Al-Qawl al-Mufeed Sharh Kitaab al-Tawheed, 
    2/287.