The practices mentioned in the question about
those who treat people by asking them to offer two Rak`ahs (units of Prayer) then recite specific Surahs of the Qur'an and tasbih with hopes of seeing a vision about the bewitched person, and ask them to recite some Surahs a hundred times on the Misbahah etc.- all these practices are Bid`ahs which have no origin in Islam. There is no proof in the Book of Allah (the Qur'an) nor in the Sunnah of His Messenger Muhammad (peace be upon him) to support these practices.
The permissible Ruqyah (Part No. 1; Page No. 97) has some conditions such as: A Ruqyah should include either the Words of Allah, His Names or Attributes. It is permissible to seek treatment through the Qur'an and through the Sunnah, as the Messenger did when reciting Ruqyah on himself or his Sahabah (Companions). It is also permissible to use (as a Ruqyah) the blessed invocations that include nothing against the sacred Shari`ah. Another condition for Ruqyah is that it be recited in Arabic or whatever gives its meaning. Another condition is for both the person who recites the Ruqyah and the person on whom it is recited, to believe that the Ruqyah itself or the person reciting it himself does not have any special effect. In fact both of them should believe the effect is up to Allah's Will and that the person who treats by Ruqyah is a mere instrument. It is Allah Who creates the reasons and their effects. It is permissible also to recite the Qur'an or Prophetic invocations on one's hands then rub them against the body as it is authentically reported that the Prophet (peace be upon him) did so when reciting Ruqyah on himself and on some of his Sahabah. As regards writing Qur'anic verses with rose-water or saffron on a piece of paper then soaking it in water then drinking this water and reciting on honey, milk or the like or rubbing the body with musk and rose-water on which Qur'anic verses have been recited, there is no harm in this. The Salaf (righteous predecessors) used to do this.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.