Khaggavisāṇasuttanidadesa

Suttapiṭaka · Khuddakanikāya · Cūḷaniddesa · Vol. 30 · Section 706

[706] If one should not find a prudent companion, one who walks together with him, dwelling virtuously, a wise man, then, like a king abandoning the realm he has conquered, let him wander alone, like a rhinoceros horn.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 1 other place

Vol. 27 · Section 1224 — Kosambiyajātaka