Is it permissible to pay a lower percentage than that agreed upon to a female doctor who deals with a pharmacy, after discovering that the pre-determined percentage is high and leads to a loss, knowing that the previous owner used to pay a lower percentage and that the doctor refuses to amend it and threatens to cut off dealings?

It is not permissible for a female doctor to take a percentage from a pharmacy in exchange for prescribing medicine to patients. This is because it violates the ethics of the medical profession and is considered an unlawful appropriation of people's wealth. The sin is even greater if the medicine is unnecessary, or if there is a better or cheaper alternative. This act is considered a violation of professional ethics. Fatwas from the Egyptian Dar al-Ifta, the Jordanian Ifta Council, and the Permanent Committee for Ifta in Saudi Arabia have all stipulated the prohibition of this practice, as it leads to deceiving the patient, financially exploiting them, and corrupting the doctor's integrity.