Silāyūpasutta
Ekaṁ samayaṁ āyasmā ca sāriputto āyasmā ca candikāputto rājagahe viharanti veḷuvane kalandakanivāpe. Tatra kho āyasmā candikāputto bhikkhū āmantesi (…): “devadatto, āvuso, bhikkhūnaṁ evaṁ dhammaṁ deseti: ‘yato kho, āvuso, bhikkhuno cetasā citaṁ hoti, tassetaṁ bhikkhuno kallaṁ veyyākaraṇāya— khīṇā jāti, vusitaṁ brahmacariyaṁ, kataṁ karaṇīyaṁ, nāparaṁ itthattāyāti pajānāmī’”ti.
The Simile of the Stone Post
So I have heard. At one time the Buddha was staying near Rājagaha in the Bamboo Grove, the squirrels’ feeding ground. There Venerable Candikāputta addressed the mendicants, “Reverends, Devadatta teaches the mendicants like this: ‘When a mendicant’s mind is solidified by heart, it’s appropriate for them to say: “I understand: ‘Rebirth is ended, the spiritual journey has been completed, what had to be done has been done, there is nothing further for this place.’”’”