Dhammapada · 26.38

Yassa gatiṃ na jānanti, devā gandhabbamānusā;Khīṇāsavaṃ arahantaṃ, tamahaṃ brūmi brāhmaṇaṃ.

Yassa gatim na jananti, deva gandhabbamanusa; Khinasavam arahantam, tamaham brumi brahmanam.

He whose destination devas, gandhabbas, and humans do not know — the one who has destroyed the cankers, the arahant — him I call a brahmin.

— Dhammapada 26.38

Source: Pali text from the Khuddaka Nikāya of the Pali Canon (oldest extant Buddhist scripture, compiled c. 3rd century BCE). Public-domain English readings drawn from F. Max Müller's translation in Sacred Books of the East, Vol X (1881) and the Buddhist Publication Society's freely-licensed Acharya Buddharakkhita rendering.