Kokilavagga

Suttapiṭaka · Khuddakanikāya · Jātaka (1) · Vol. 27 · Section 623

[623] "Indeed, a well-whetted blade, like deadly halāhala poison, does not bring one down so instantly as ill-spoken speech does."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.