Let me answer your specific questions by quoting them.
1. “So my question is that, is it the case that these jhanas/samapattis are not there after arahant gets separated from 31 realms, simply because they are not required/necessary anymore?”
- The point is that jhanas are associated with (or related to) the 16 rupa loka Brahma realms. In the same way, samapattis are related to the 4 arupa loka Brahma realms. For example, those humans who cultivate jhanas in born in one of the 16 rupa loka Brahma realms, and those who cultivate samapattis will be reborn in one of the 4 arupa loka Brahma realms.
- Therefore, those 20 realms are part of the world. The 31 realms in the world include 11 other realms in kama loka (with the 4 apayas, human realm, and 6 Deva realms).
- When one attains Arahanthood, one will be released from rebirths in all 31 realms. When the Arahant dies, they will not be reborn in any realm; it is the end of the cycle of rebirths and the end of even a trace of suffering.
- Furthermore, while it is good to cultivate jhanas or samapattis, they are not necessary to attain any magga phala, including Arahanthood. See my comment on February 25, 2026 at 5:56 am in “Vipassanā Methods.”
2. “Basically I am asking is that, is the reason for jhanas/samapattis not being there after separation from 31 realms of existence is just that, they are not required anymore? “
- Yes. See the last bullet point above.
- Many have attained even Arahanthood without attaining jhana. The majority of Arahants belong to that category of paññāvimutti Arahants; see “Pannāvimutti – Arahanthood without Jhāna.”
