So I have heard. At one time the Buddha was staying in a forest near Icchānaṅgala.

Now at that time several very well-known well-to-do brahmins were residing in Icchānaṅgala. They included the brahmins Caṅkī, Tārukkha, Pokkharasāti, Jānussoṇi, Todeyya, and others.

Then as the students Vāseṭṭha and Bhāradvāja were going for a walk they began to discuss the question: “How do you become a brahmin?” Bhāradvāja said this: “When you’re well born on both your mother’s and father’s side, stemming from a clean vessel, with irrefutable and impeccable genealogy back to the seventh paternal generation—then you’re a brahmin.” Vāseṭṭha said this: “When you’re ethical and accomplished in doing your duties—then you’re a brahmin.”

But neither was able to persuade the other.