Attadaṇḍasuttaniddesa

Suttapiṭaka · Khuddakanikāya · Mahāniddesa · Vol. 29 · Section 864

[864] For whom there is nothing whatsoever (kiñcana) held as "this is mine," nor even as belonging to others, he, not finding any sense of "mine" (mamatta), does not grieve, thinking "it is not mine."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.