Eating prawns

My question is about the difference of opinion and dealing with it, like for example, the Hanafee mathhab treats prawns as impermissible (if I am correct), but other mathhabs do not, so if for example, a Hanafee is living with a Hanbalee, and the Hanbalee and Hanafee orders food, the Hanbalee is ordering and he orders a prawn curry and orders a meat curry for the Hanafee, but when the order comes the Hanbalee is unavailable, so would it be considered impermissible for the Hanafee to answer the door and receive the takeaway (the prawns and the meat)?