A marrow bone of a corpse or a marrow bone of sacrificial animals: [if] one touches them either closed or punctured, he is tamei. A marrow bone of a neveilah or a marrow bone of a sheretz: [if] one touches them when they are closed, he is tahor; [if] they are punctured at all, they convey tumah through contact. How do we know that the same applies to carrying? Because Scripture states (Leviticus 11:39-40): He who touches . . . and he who carries . . . — whatever comes within the scope of [tumah through] contact comes within the scope of [tumah through] carrying; whatever does not come within the scope of [tumah through] contact does not come within the scope of [tumah through] carrying.