[456] Which phenomena (dhammā) are indeterminate (abyākata)?
On the occasion when one develops supramundane (lokuttara) jhāna — leading out (niyyānika), tending to dismantling (apacayagāmī) — for the abandoning of views (diṭṭhigata), for the attainment of the first stage (bhūmi), [and,] quite secluded from sensual pleasures … enters upon and dwells in the first jhāna, of painful practice and sluggish direct knowledge (dukkhāpaṭipada-dandhābhiñña), emptiness (suññata), having zeal as its dominant factor (chandādhipateyya) — on that occasion there is contact (phassa) … there is non-distraction (avikkhepa) … These phenomena are wholesome.
As the result (vipāka) of that same supramundane wholesome jhāna having been done, having been developed, one — quite secluded from sensual pleasures … — enters upon and dwells in the first jhāna, of painful practice and sluggish direct knowledge, signless (animitta), having zeal as its dominant factor — on that occasion there is contact … there is non-distraction … These phenomena are indeterminate.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.