One who sells the head of a large animal has not sold the legs; [if] he sold the legs, he has not sold the head. [If] he sold the trachea, he has not sold the liver; [if] he sold the liver, he has not sold the trachea. However, in [the case of] a small animal, [if] he sold the head, he has sold the legs; [if] he sold the legs, he has not sold the head. [If] he sold the trachea, he has sold the liver; [if] he sold the liver, he has not sold the trachea.