MN 1:194.1–194.10

nibbānaṁ nibbānato abhijānāti; nibbānaṁ nibbānato abhiññāya nibbānaṁ na maññati, nibbānasmiṁ na maññati, nibbānato na maññati, nibbānaṁ meti na maññati, nibbānaṁ nābhinandati. Taṁ kissa hetu? ‘Nandī dukkhassa mūlan’ti— iti viditvā ‘bhavā jāti bhūtassa jarāmaraṇan’ti. Tasmātiha, bhikkhave, ‘tathāgato sabbaso taṇhānaṁ khayā virāgā nirodhā cāgā paṭinissaggā anuttaraṁ sammāsambodhiṁ abhisambuddho’ti vadāmī”ti. Tathāgatavasena aṭṭhamanayabhūmiparicchedo niṭṭhito. Idamavoca bhagavā. Na te bhikkhū bhagavato bhāsitaṁ abhinandunti. Mūlapariyāyasuttaṁ niṭṭhitaṁ paṭhamaṁ.

He directly knows extinguishment as extinguishment. Having directly known extinguishment as extinguishment, he does not conceive it to be extinguishment, he does not conceive it in extinguishment, he does not conceive it as extinguishment, he does not conceive that ‘extinguishment is mine’, he does not approve extinguishment. Why is that? Because he has understood that approval is the root of suffering, and that rebirth comes from continued existence; whoever has come to be gets old and dies. That’s why the Realized One—with the ending, fading away, cessation, giving up, and letting go of all cravings—has awakened to the supreme perfect Awakening, I say.” That is what the Buddha said. But the mendicants did not approve what the Buddha said.