Tissametteyyasuttaniddesa

Suttapiṭaka · Khuddakanikāya · Mahāniddesa · Vol. 29 · Section 259

[259] One should train in seclusion (viveka) itself; this is supreme for the noble ones. One should not conceive oneself the best because of that; such a one is indeed in the vicinity of Nibbāna.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.