Ud 8:1 Unbinding (1) (Nibbāna Sutta)
I have heard that on one occasion the Blessed One was staying near Sāvatthī at Jeta’s Grove, Anāthapiṇḍika’s monastery. And on that occasion the Blessed One was instructing, urging, rousing, & encouraging the monks with Dhamma-talk concerned with unbinding. The monks–receptive, attentive, focusing their entire awareness, lending ear–listened to the Dhamma.
Then, on realizing the significance of that, the Blessed One on that occasion exclaimed:
There is that dimension, monks, where there is neither earth, nor water, nor fire, nor wind; neither dimension of the infinitude of space, nor dimension of the infinitude of consciousness, nor dimension of nothingness, nor dimension of neither perception nor non-perception; neither this world, nor the next world, nor sun, nor moon. And there, I say, there is neither coming, nor going, nor staying; neither passing away nor arising: unestablished,1 unevolving, without support [mental object].2 This, just this, is the end of stress.
1. On unestablished consciousness, see SN 22:87 and the discussion in The Paradox of Becoming, chapter 7.
2. See SN 22:53.