I have heard that on one occasion the Blessed One was staying in Savatthi at Jeta's Grove, Anathapindika's monastery . There he addressed the monks, "Monks!"
"Yes, lord," the monks replied.
The Blessed One said: "Monks, speech endowed with four characteristics is well-spoken, not poorly spoken — faultless & not to be faulted by the wise. Which four? There is the case where a monk says only what it well-spoken, not what is poorly spoken; only what is just, not what is unjust; only what is endearing, not what is unendearing; only what is true, not what is false. Speech endowed with these four characteristics is well-spoken, not poorly spoken — faultless & not to be faulted by the wise."
That is what the Blessed One said. Having said this, the One Well-Gone, the Teacher, said further:
Then Ven. Vangisa , rising from his seat, arranging his robe over one shoulder, faced the Blessed One with his hands palm-to-palm in front of his heart and said, "An inspiration has come to me, Blessed One! An inspiration has come to me, One Well-Gone!"
"Let the inspiration come to you, Vangisa," the Blessed One said.
Then Ven. Vangisa praised the Blessed One to his face with these attractive verses: