[242] "And how, bhikkhus, should the nutriment of contact (phassāhāra) be seen? Suppose, bhikkhus, there were a cow without skin. If she were to stand relying on a wall, the creatures dwelling in the wall would devour her; if she were to stand relying on a tree, the creatures dwelling in the tree would devour her; if she were to stand relying on water, the creatures dwelling in the water would devour her; if she were to stand relying on the open air, the creatures dwelling in the air would devour her. For whatever that skinless cow might stand relying upon, the creatures dwelling upon that very thing would devour her. In just the same way, bhikkhus, I say the nutriment of contact should be seen. When the nutriment of contact is fully understood (pariññāta), the three feelings (vedanā) are fully understood; when the three feelings are fully understood, I say there is nothing further that a noble disciple (ariyasāvaka) needs to do."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.