MN93 Purity is not on account of birth or rebirth: talk by Piya Tan

The Assalâyana Sutta (MN93) is significant in that it records all the arguments
ever used by the Buddha against the brahmins’ claim to class supremacy.
Assalâyana is a 16-year-old brahmin student of Sāvatthī, learned in the
Vedas and related fields. After repeated requests by 500 brahmins to
defeat the Buddha in a debate, he visits the Buddha and asks him his
response to the claims of the brahmins that they are the highest class,
born of Brahmā’s mouth.