Is it permissible for a father to kill his daughter and her lover in the name of preserving honor and claiming martyrdom, knowing that he has been advised to repent and disown her?

If a man kills his daughter's lover, and the lover was not married (non-muhsan), then retaliation (qisas) is applied to the killer, even if his adultery is proven, unless the blood relatives of the deceased pardon him. If the lover was married (muhsan) and committed adultery with the daughter, the killer is required to provide evidence (four witnesses); otherwise, retaliation (qisas) is applied to him. However, according to the relied-upon opinion, retaliation is not applied to a father if he kills his daughter. It is incumbent upon a man to beware of the instigations of Satan, to deal with his daughter wisely, to remove her from an environment of immorality, and to fear Allah concerning her and himself.