Nibbānasutta
“Nibbāne sukhānupassī viharati sukhasaññī sukhapaṭisaṁvedī satataṁ samitaṁ abbokiṇṇaṁ cetasā adhimuccamāno paññāya pariyogāhamāno. So āsavānaṁ khayā …pe… sacchikatvā upasampajja viharati. Ayaṁ bhikkhave, paṭhamo puggalo āhuneyyo …pe… puññakkhettaṁ lokassa.
Extinguishment
“One meditates observing the happiness in extinguishment. They perceive happiness and experience happiness. Constantly, continually, and without interruption, they apply the mind and fathom with wisdom. They’ve realized the undefiled freedom of heart and freedom by wisdom, and live having realized it with their own insight in this very life due to the ending of defilements. This is the first individual worthy of offerings.