[899] Which phenomena (dhammā) are visible and impinging (sanidassana-sappaṭigha)?
The form base (rūpāyatana) — these phenomena are visible and impinging.
Which phenomena are invisible but impinging (anidassana-sappaṭigha)?
The eye base (cakkhāyatana) … the tangible-object base (phoṭṭhabbāyatana) — these phenomena are invisible but impinging.
Which phenomena are invisible and non-impinging (anidassana-appaṭigha)?
The wholesome (kusala) in the four planes (bhūmi); the unwholesome (akusala); the resultant (vipāka) in the four planes; the functional indeterminate (kiriyā-abyākata) in the three planes; and that form, invisible and non-impinging, which is included in the dhamma base (dhammāyatana); and Nibbāna — these phenomena are invisible and non-impinging.
The Triads.
_____________
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.