The AggregatesKhandhasutta

At Sāvatthī.Sāvatthinidānaṁ.

“Mendicants, form is impermanent, decaying, and perishing.“Rūpaṁ, bhikkhave, aniccaṁ vipariṇāmi aññathābhāvi; Feeling,vedanā aniccā vipariṇāmī aññathābhāvī; perception,saññā … choices,saṅkhārā aniccā vipariṇāmino aññathābhāvino; and consciousness are impermanent, decaying, and perishing.viññāṇaṁ aniccaṁ vipariṇāmi aññathābhāvi.

Someone who has faith and confidence in these teachings is called a follower by faith. They’ve stepped into the sure path, they’ve stepped into the level of the true person, and they’ve passed beyond the level of the untrue person.Yo, bhikkhave, ime dhamme evaṁ saddahati adhimuccati, ayaṁ vuccati saddhānusārī, okkanto sammattaniyāmaṁ, sappurisabhūmiṁ okkanto, vītivatto puthujjanabhūmiṁ; They can’t do any deed which would make them be reborn in hell, the animal realm, or the ghost realm.abhabbo taṁ kammaṁ kātuṁ, yaṁ kammaṁ katvā nirayaṁ vā tiracchānayoniṁ vā pettivisayaṁ vā upapajjeyya; They can’t die without realizing the fruit of stream-entry.abhabbo ca tāva kālaṁ kātuṁ yāva na sotāpattiphalaṁ sacchikaroti.

Someone who accepts these teachings after deliberating them with a degree of wisdom is called a follower of teachings. They’ve stepped into the sure path, they’ve stepped into the level of the true person, and they’ve passed beyond the level of the untrue person.Yassa kho, bhikkhave, ime dhammā evaṁ paññāya mattaso nijjhānaṁ khamanti, ayaṁ vuccati: ‘dhammānusārī, okkanto sammattaniyāmaṁ, sappurisabhūmiṁ okkanto, vītivatto puthujjanabhūmiṁ; They can’t do any deed which would make them be reborn in hell, the animal realm, or the ghost realm.abhabbo taṁ kammaṁ kātuṁ, yaṁ kammaṁ katvā nirayaṁ vā tiracchānayoniṁ vā pettivisayaṁ vā upapajjeyya; They can’t die without realizing the fruit of stream-entry.abhabbo ca tāva kālaṁ kātuṁ yāva na sotāpattiphalaṁ sacchikaroti’.

Someone who understands and sees these principles is calledYo, bhikkhave, ime dhamme evaṁ pajānāti evaṁ passati, ayaṁ vuccati: a stream-enterer, not liable to be reborn in the underworld, assured, destined for awakening.”‘sotāpanno avinipātadhammo niyato sambodhiparāyano’”ti.

The Linked Discourses on stepping into are complete.Okkantasaṁyuttaṁ samattaṁ.