[1862] "Does an Arahant (arahā) attain final Nibbāna (parinibbāyati) while established in the imperturbable (āneñja)?" — "Yes."
"Does an Arahant attain final Nibbāna while established in a functional mind (kiriyamaya-citta)?" — "It should not be said so. …"
"Is it not so that an Arahant attains final Nibbāna while established in a resultant mind (vipāka-citta)?" — "Yes."
"If an Arahant attains final Nibbāna while established in a resultant mind, then indeed, good sir, it should not be said that an Arahant attains final Nibbāna while established in the imperturbable."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.