Is it permissible to buy a pie, half of which contains pork, then discard the half containing pork and eat the permissible half, taking into account its reduced price? Is it permissible to remove the pieces of pork from the forbidden part and eat the rest? Is it permissible to give the forbidden half to a poor non-Muslim instead of discarding it?

The questioner sinned by purchasing a pie containing pork, as pork is forbidden to eat and to buy. The fact that a part of the pie does not contain pork does not justify its purchase, for the purchase is a single transaction. The pork may be impure, and its impurity could spread to the entire pie through cooking. Consequently, the questioner may have consumed impurity even in the part devoid of pork. If impurity falls on a solid substance that prevents the transfer of impure particles, it is permissible to eat it after removing the impurity and what surrounds it. If it does not prevent transfer, then it is forbidden to consume. The questioner must repent from this action. It is also forbidden to give a pie containing pork, or half of it, to a non-believer to eat, as this constitutes an indication of the forbidden and causes its consumption.