[603] Which is that form (rūpa), external, that is not the basis (vatthu) of ear-contact (sotasamphassa) … of nose-contact (ghānasamphassa) … of tongue-contact (jivhāsamphassa) … of body-contact (kāyasamphassa)?
The form base (rūpāyatana) … edible nutriment (kabaḷīkāra āhāra) — this is that form, external, that is not the basis of body-contact.
Which is that form, internal (ajjhattika), that is the basis of body-contact? The body base (kāyāyatana) — this is that form, internal, that is the basis of body-contact.
Which is that form, internal, that is not the basis of body-contact? The eye base (cakkhāyatana) … the tongue base (jivhāyatana) — this is that form, internal, that is not the basis of body-contact.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.