[570] Which form (rūpa) is the sound element (sadda-dhātu)? … the odour element (gandha-dhātu)? … the taste element (rasa-dhātu)? … the tangible element (phoṭṭhabba-dhātu)?
The tangible sense base (phoṭṭhabbāyatana) — this is that form which is the tangible element.
Which form is not the tangible element?
The eye sense base (cakkhāyatana) … edible food (kabaḷiṅkāra āhāra) — this is that form which is not the tangible element.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.