With Soṇadaṇḍa 20.14

20.14

‘brāhmaṇosmī’ti ca vadamāno sammā vadeyya, na ca pana musāvādaṃ āpajjeyyā”ti.

Now at that time a young Brahman named Angaka, sister’s son to Soṇadaṇḍa the Brahman, was seated in that company. And Soṇadaṇḍa said to those Brahmans: ‘Do the venerable ones see this Angaka, our nephew?’
‘Yes, Sir, we see him.’
‘Well! Angaka, Sirs, is handsome, pleasant to look upon, inspiring trust, gifted with great beauty of complexion, fair in, colour, fine in presence, stately to behold—none in this assembly is like unto him in colour, save only the Samaṇa Gotama.
‘And Angaka, Sirs, is a repeater (of the sacred words), knowing the mystic verses by heart, one who has mastered the Three Vedas, with the indices, the ritual, the phonology, and the exegesis (as a fourth), and the legends as a fifth, learned in the phrases and the grammar, versed in Lokāyata (Nature-lore), and in the theory of the signs on the body of a great man—I myself have taught him the verses.
‘And Angaka, Sirs, is well born on both sides, on the mother’s side and on the father’s side, of pure descent back through seven generations, with no slur put upon him, and no reproach in respect of birth—I myself know his forebears, on the mother’s side and on the father’s.
‘If Angaka, Sirs, should kill. living things, and take what has not been given, and go the way of the adulterer, and speak lies, and drink strong drink, what then, Sirs, would his colour avail him? what the verses? what his birth?
‘It is in so far, Sirs, as a Brahman is virtuous, increased in virtue, gifted with virtue that has grown great; in so far as he is learned and wise, the first, or it may be the second, among those who hold out the ladle, that Brahmans would declare him, as endowed with these two qualities, to be a Brahman, to be one who could rightly say " I am a Brahman" without falling into falsehood.’