Pañcakamātikā

Abhidhammapiṭaka · Dhammasaṅgaṇī · Vol. 34 · Section 507

[507] The classification (saṅgaha) of form (rūpa) in the fivefold way: the earth element (paṭhavī-dhātu), the water element (āpo-dhātu), the fire element (tejo-dhātu), the air element (vāyo-dhātu), and whatever form is derived (upādā). Thus is the classification of form in the fivefold way. The Pentad (pañcakaṃ).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.