[566] Which form (rūpa) is the sound base (saddāyatana)? … the smell base (gandhāyatana)? … the taste base (rasāyatana)? … the tangible base (phoṭṭhabbāyatana)?
The earth element (paṭhavī-dhātu) … this is also the tangible element (phoṭṭhabba-dhātu). This form is the tangible base.
Which form is not the tangible base? The eye base (cakkhāyatana) … edible nutriment (kabaḷiṃkāro āhāro) — this form is not the tangible base.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.