Akkhaṇasutta
“‘Khaṇakicco loko, khaṇakicco loko’ti, bhikkhave, assutavā puthujjano bhāsati, no ca kho so jānāti khaṇaṁ vā akkhaṇaṁ vā. Aṭṭhime, bhikkhave, akkhaṇā asamayā brahmacariyavāsāya. Katame aṭṭha? Idha, bhikkhave, tathāgato ca loke uppanno hoti arahaṁ sammāsambuddho vijjācaraṇasampanno sugato lokavidū anuttaro purisadammasārathi satthā devamanussānaṁ buddho bhagavā, dhammo ca desiyati opasamiko parinibbāniko sambodhagāmī sugatappavedito; ayañca puggalo nirayaṁ upapanno hoti. Ayaṁ, bhikkhave, paṭhamo akkhaṇo asamayo brahmacariyavāsāya.
Lost Opportunities
“‘Now is the time! Now is the time!’ So says an unlearned ordinary person. But they don’t know whether it’s time or not. Mendicants, there are eight lost opportunities for spiritual practice. What eight? Firstly, a Realized One has arisen in the world—perfected, a fully awakened Buddha, accomplished in knowledge and conduct, holy, knower of the world, supreme guide for those fit for training, teacher of gods and humans, awakened, blessed. He teaches the Dhamma leading to peace, extinguishment, awakening, as proclaimed by the Holy One. But an individual has been reborn in hell. This is the first lost opportunity for spiritual practice.