[41] Thus have I heard. On one occasion the Blessed One, newly become fully awakened (paṭhamābhisambuddha), was dwelling at Uruvelā on the bank of the river Nerañjarā, at the Ajapāla Banyan tree. Now on that occasion the Blessed One had been sitting for seven days in a single cross-legged posture, experiencing the bliss of liberation (vimuttisukha). Then, at the end of those seven days, the Blessed One emerged from that concentration (samādhi). Then a certain brahmin, given by nature to uttering the scornful grunt "huṁ, huṁ," approached the Blessed One; having approached, he exchanged greetings with the Blessed One, and when the cordial and memorable talk was concluded, he stood to one side. Standing to one side, that brahmin said this to the Blessed One: "To what extent, Master Gotama, is one a brahmin? And what, moreover, are the qualities that make one a brahmin?"
Then the Blessed One, having understood this matter, on that occasion uttered this inspired utterance (udāna):
"That brahmin who has banished evil qualities,
not grunting 'huṁ, huṁ,' free from stain, self-restrained,
gone to the end of knowledge, having lived the holy life (brahmacariya) to completion—
righteously might that brahmin speak the word 'brahmin' (brahmavāda),
he for whom there are no swellings (ussada) anywhere in the world."
The fourth [sutta].
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.