[1359] Whoever has abandoned the grief faculty (domanassindriya), has that one developed the 'I shall come to know the unknown' faculty (anaññātaññassāmītindriya)?
Yes.
Or rather, whoever has developed the 'I shall come to know the unknown' faculty, has that one abandoned the grief faculty?
Four persons have developed the 'I shall come to know the unknown' faculty but have not abandoned the grief faculty; three persons have both developed the 'I shall come to know the unknown' faculty and have abandoned the grief faculty.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.