[388] Which phenomena (dhammā) are indeterminate (abyākata)?
On the occasion when one develops the path (magga) for rebirth in the formless (arūpūpapatti) and — having completely transcended the sphere of nothingness (ākiñcaññāyatana), with the abandoning of pleasure … — attains and dwells in the fourth jhāna accompanied by the perception of the sphere of neither perception nor non-perception (nevasaññānāsaññāyatana): on that occasion there is contact (phassa) … there is non-distraction (avikkhepa) — these phenomena are wholesome.
Because that same wholesome kamma of the formless sphere (arūpāvacara) has been done and accumulated, as its result (vipāka) he — having completely transcended the sphere of nothingness, with the abandoning of pleasure … — attains and dwells in the fourth jhāna accompanied by the perception of the sphere of neither perception nor non-perception: on that occasion, with volitional formations as condition, consciousness; with consciousness as condition, name (nāma); with name as condition, the sixth sense base (chaṭṭhāyatana); with the sixth sense base as condition, contact; with contact as condition, feeling (vedanā); with feeling as condition, confidence (pasāda); with confidence as condition, resolution (adhimokkha); with resolution as condition, existence (bhava); with existence as condition, birth; with birth as condition, aging and death. Thus is the origin of this whole mass of suffering (dukkha).
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.