Responsa for Chullin 266:50

ולא היא אטו מורם מתודה ואיל נזיר דקא חשיב להו כחדא משום דחדא נינהו

Do we have regard to the part of the animal on which the obligation rests and this part belongs to the Israelite,<span class="x" onmousemove="('comment',' At the time of slaughtering when the obligation to give the portions falls due the Israelite is the owner of the head of the animal. And since the head belongs to the Israelite he is liable to give the two cheeks to the priest.');">³²</span>

Shut min haShamayim