Subhāsitasutta

Suttapiṭaka · Saṁyuttanikāya · Sagāthāvaggasaṁyutta · Vol. 15 · Section 740

[740] Then the Venerable Vaṅgīsa extolled the Blessed One to his face with fitting verses: "One should speak only such speech by which one would not torment oneself nor cause injury to others: that speech truly is well spoken. One should speak only pleasant speech, speech that is welcomed with delight; that which, taking up nothing evil, one speaks as pleasant to others. Truth indeed is deathless speech: this is an ancient principle; in truth, in the beneficial, and in the Dhamma — so they say — the good stand established. The speech that the Buddha speaks, secure for the attainment of Nibbāna, for making an end of suffering (dukkha) — that truly is the foremost of words." The Sixth: The Sāriputta Sutta

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.