[441] And how does a bhikkhu dwell contemplating feelings (vedanā) in feelings internally?
Here a bhikkhu, when feeling a pleasant feeling, understands: "I feel a pleasant feeling." When feeling a painful feeling, he understands: "I feel a painful feeling." When feeling a neither-painful-nor-pleasant feeling, he understands: "I feel a neither-painful-nor-pleasant feeling." Or when feeling a worldly (sāmisa) pleasant feeling, he understands: "I feel a worldly pleasant feeling." Or when feeling an unworldly (nirāmisa) pleasant feeling, he understands: "I feel an unworldly pleasant feeling." Or when feeling a worldly painful feeling, he understands: "I feel a worldly painful feeling." Or when feeling an unworldly painful feeling, he understands: "I feel an unworldly painful feeling." Or when feeling a worldly neither-painful-nor-pleasant feeling, he understands: "I feel a worldly neither-painful-nor-pleasant feeling." Or when feeling an unworldly neither-painful-nor-pleasant feeling, he understands: "I feel an unworldly neither-painful-nor-pleasant feeling."
He pursues that sign (nimitta), develops it, makes much of it, and determines it well. Having pursued that sign, developed it, made much of it, and determined it well, he directs his mind (citta) to feelings externally.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.