The Tipiṭaka in Three Languages

Ekādasakamātikā

Abhidhammapiṭaka · Dhammasaṅgaṇī · Vol. 34 · Section 544

[544] Which is that form that is visible (sanidassana)? The sense base of form (rūpāyatana): this is that form that is visible. Which is that form that is invisible (anidassana)? The sense base of the eye (cakkhāyatana) … edible nutriment (kabaḷīkāro āhāro): this is that form that is invisible.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places