[601] Which is that form that is external, not the basis (vatthu) of eye-contact (cakkhusamphassa)?
The form sense base (rūpāyatana) … edible nutriment (kabaḷīkāro āhāro) — this is that form that is external, not the basis of eye-contact.
Which is that form that is internal, the basis of eye-contact?
The eye sense base (cakkhāyatana) — this is that form that is internal, the basis of eye-contact.
Which is that form that is internal, not the basis of eye-contact?
The ear sense base (sotāyatana) … the body sense base (kāyāyatana) — this is that form that is internal, not the basis of eye-contact.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.