Tacasārajātaka

Suttapiṭaka · Khuddakanikāya · Jātaka (1) · Vol. 27 · Section 789

[789] By sorrowing and by lamentation no benefit is gained, not even a little; knowing him to be sorrowing and in pain, his enemies become delighted.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.