[614] Which is that form (rūpa) which is external (bāhira) and is not the ear element (sota-dhātu)? … not the nose element (ghāna-dhātu)? … not the tongue element (jivhā-dhātu)? … not the body element (kāya-dhātu)?
The form base (rūpāyatana) … edible nutriment (kabaḷīkāra āhāra) — this is that form which is external and is not the body element.
Which is that form which is internal (ajjhattika) and is the body element?
The body base (kāyāyatana) — this is that form which is internal and is the body element.
Which is that form which is internal and is not the body element?
The eye base (cakkhāyatana) … the tongue base (jivhāyatana) — this is that form which is internal and is not the body element.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.