Sotasutta 13.2

13.2

Idha, bhikkhave, bhikkhu yā sā disā agatapubbā iminā dīghena addhunā, yadidaṃ sabbasaṅkhārasamatho sabbūpadhipaṭinissaggo taṇhākkhayo virāgo nirodho nibbānaṃ, taṃ khippaññeva gantā hoti.

It’s when a mendicant swiftly goes in the direction they’ve never gone before in all this long time; that is, the stilling of all activities, the letting go of all attachments, the ending of craving, fading away, cessation, extinguishment.