Vāruṇidūsakajātaka

Suttapiṭaka · Khuddakanikāya · Jātaka (1) · Vol. 27 · Section 47

[47] "Truly, useful conduct (atthacariyā) done by one skilled in what is unbeneficial brings no happiness; the man of poor wisdom spoils the good, just as Koṇḍañña spoiled the liquor." End of the Vāruṇidūsaka Jātaka, the seventh. 8. The Vedabba Jātaka

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.