[690] Bhikkhu, just as from the friction and conjunction of two sticks heat is generated and fire is produced, and from the separation and laying apart of those same two sticks the heat born therefrom ceases and subsides — even so, bhikkhu, in dependence on a contact (phassa) to be experienced as pleasant there arises pleasant feeling (vedanā). When feeling a pleasant feeling, he understands: 'I feel a pleasant feeling.' He understands: 'With the cessation of that same contact to be experienced as pleasant, the felt experience born therefrom — the pleasant feeling arisen in dependence on the contact to be experienced as pleasant — ceases, it subsides.' Bhikkhu, in dependence on a contact to be experienced as painful there arises painful feeling. When feeling a painful feeling, he understands: 'I feel a painful feeling.' He understands: 'With the cessation of that same contact to be experienced as painful, the felt experience born therefrom — the painful feeling arisen in dependence on the contact to be experienced as painful — ceases, it subsides.' Bhikkhu, in dependence on a contact to be experienced as neither-painful-nor-pleasant there arises neither-painful-nor-pleasant feeling. When feeling a neither-painful-nor-pleasant feeling, he understands: 'I feel a neither-painful-nor-pleasant feeling.' He understands: 'With the cessation of that same contact to be experienced as neither-painful-nor-pleasant, the felt experience born therefrom — the neither-painful-nor-pleasant feeling arisen in dependence on the contact to be experienced as neither-painful-nor-pleasant — ceases, it subsides.' Then there remains only equanimity, pure, bright, malleable, wieldy, and radiant.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.