AN 3.81

Samaṇasutta

“Tīṇimāni, bhikkhave, samaṇassa samaṇiyāni samaṇakaraṇīyāni. Katamāni tīṇi? Adhisīlasikkhāsamādānaṁ, adhicittasikkhāsamādānaṁ, adhipaññāsikkhāsamādānaṁ— imāni kho, bhikkhave, tīṇi samaṇassa samaṇiyāni samaṇakaraṇīyāni.

Ascetics

“Mendicants, there are three duties of an ascetic. What three? Undertaking the training in the higher ethics, the higher mind, and the higher wisdom. These are the three duties of an ascetic.

Tasmātiha, bhikkhave, evaṁ sikkhitabbaṁ: ‘tibbo no chando bhavissati adhisīlasikkhāsamādāne, tibbo no chando bhavissati adhicittasikkhāsamādāne, tibbo no chando bhavissati adhipaññāsikkhāsamādāne’ti. Evañhi vo, bhikkhave, sikkhitabban”ti.

So you should train like this: ‘We will have keen enthusiasm for undertaking the training in the higher ethics, the higher mind, and the higher wisdom.’ That’s how you should train.”