[1399] "One who abandons the grief faculty (domanassindriya) — has that one developed the 'I shall come to know the unknown' faculty (anaññātaññassāmītindriya)?"
"Yes."
"Or rather, one who has developed the 'I shall come to know the unknown' faculty — does that one abandon the grief faculty?"
"Six persons have developed the 'I shall come to know the unknown' faculty, yet they do not abandon the grief faculty; the person possessed of the path of non-returning (anāgāmimagga-samaṅgī) both has developed the 'I shall come to know the unknown' faculty and abandons the grief faculty."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.