The Tipiṭaka in Three Languages

Ekādasakamātikā

Abhidhammapiṭaka · Dhammasaṅgaṇī · Vol. 34 · Section 569

[569] Which is that form that is the form element (rūpadhātu)? The form base (rūpāyatana) — this is that form that is the form element. Which is that form that is not the form element? The eye base (cakkhāyatana) … edible nutriment (kabaḷīkāra āhāra) — this is that form that is not the form element.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places