Suttanipata 3.9.1

3.9.1.1

Evaṃ me sutaṃ—

A dispute arose between two young men, Bhâradvâga and Vâsettha, the former contending man to be a Brâmana by birth, the latter by deeds. They agreed to go and ask Samana Gotama, and he answered that man is a Brâmana by his work only. The two young men are converted.--Text (from Magghimanikâya) and translation in Alwis's Buddhist Nirvâna, p. 103.
So it was heard by me:
At one time Bhagavat dwelt at Ikkhânamkala, in the Ikkhânamkala forest. At that time many distinguished,
[1. Etâdiso vinâbhâvo.]
wealthy Brâmanas lived at Ikkhânamkala, as the Brâmana Kamkin, the Brâmana Târukkha, the Brâmana Pokkharasâti, the Brâhmana Gânussoni, the Brâmana Todeyya, and other distinguished, wealthy Brâmanas.
Then this dialogue arose between the young men Vâsettha and Bhâradvâga while walking about:
'How does one become a Brâmana?'
The young man Bhâradvâga said: 'When one is noble by birth on both sides, on the mother's and on the father's side, of pure conception up to the seventh generation of ancestors, not discarded and not reproached in point of birth, in this way one is a Brâmana.'
The young man Vâsettha said: 'When one is virtuous and endowed with (holy) works, in this way he is a Brâmana.'
Neither could the young man Bhâradvâga convince the young man Vâsettha, nor could the young man Vâsettha convince the young man Bhâradvâga. Then the young man Vâsettha addressed the young man Bhâradvâga: 'O Bhâradvâga, this Samana Gotama, the Sakya son, gone out from the Sakya family, dwells at Ikkhânamkala, in the forest of Ikkhânamkala, and the following good praising words met the venerable Gotama: "And so he is Bhagavat, the venerable, the enlightened, the glorious, let us go, O venerable Bhâradvâga, let us go (to the place) where the Samana Gotama is, and having gone there let us ask the Samana Gotama about this matter, and as the Samana Gotama replies so will we understand it."'
'Very well, O venerable one;' so the young man Bhâradvâga answered the young man Vâsettha.
Then the young men Vâsettha and Bhâradvâga went (to the place) where Bhagavat was, and having gone, they talked pleasantly with Bhagavat, and after having had some pleasant and remarkable conversation (with him) they sat down apart. Sitting down apart the young man Vâsettha addressed Bhagavat in stanzas:

3.9.1.2

ekaṃ samayaṃ bhagavā icchānaṅgale viharati icchānaṅgalavanasaṇḍe.

'We are accepted and acknowledged masters of the three Vedas[1], I am (a pupil) of Pokkharasâti, and this young man is (the pupil) of Târukkha. (594)

3.9.1.3

Tena kho pana samayena sambahulā abhiññātā abhiññātā brāhmaṇamahāsālā icchānaṅgale paṭivasanti, seyyathidaṃ—

3.9.1.4

caṅkī brāhmaṇo, tārukkho brāhmaṇo, pokkharasāti brāhmaṇo, jāṇussoṇi brāhmaṇo, todeyyo brāhmaṇo, aññe ca abhiññātā abhiññātā brāhmaṇamahāsālā.

3.9.1.5

Atha kho vāseṭṭhabhāradvājānaṃ māṇavānaṃ jaṅghāvihāraṃ anucaṅkamantānaṃ anuvicarantānaṃ ayamantarākathā udapādi:

3.9.1.6

“kathaṃ, bho, brāhmaṇo hotī”ti?