Ekādasakamātikā

Abhidhammapiṭaka · Dhammasaṅgaṇī · Vol. 34 · Section 539

[539] Which is that form (rūpa) that is not derived (no upādā)? The sense base of tangible objects (phoṭṭhabbāyatana) and the water element (āpodhātu).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.