Tissametteyyasuttaniddesa

Suttapiṭaka · Khuddakanikāya · Mahāniddesa · Vol. 29 · Section 235

[235] One who, having formerly wandered alone, resorts to sexual intercourse — like a vehicle veering off course — him they call in the world a low worldling (puthujjana).

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.