It’s incredible, worthy Gotama, it’s amazing, how well said this was by the worthy Gotama: ‘It’s impossible, it can’t happen, that an untrue person could know … But it is possible that a true person could know …’ Well, now, worthy Gotama, I must go. I have many duties, and much to do.” “Please, brahmin, go at your convenience.”

Then Vassakāra the brahmin, having approved and agreed with what the Buddha said, rose from his seat and left.

Numbered Discourses 4.188 19. Brahmins With Upaka