In a post-canonical text Sri Lankan text called Saddharmaratnākaraya, a distinction is drawn between four different "kāya"s: the "rūpakāya", "dharmakāya", "nimittakāya" and "suñyakāya". The "rūpakāya" refers to the four "jhāna"s here; the "dharmakāya" refers to the attainment of the first eight of the nine "lokuttaradhamma"s; the "nimittakāya" refers to the final "lokuttaradhamma": "Nibbāna" with a physical remainder ("sopadisesanibbāna"); and the "suñyakāya" refers to "Nibbāna" without physical remainder ("anupādisesanibbāna"). However, even this teaching of four "kāya"s does not really stray outside of orthodox Theravāda tradition.