So I have heard. At one time the Buddha was staying near Sāvatthī in Jeta’s Grove, Anāthapiṇḍika’s monastery. There the Buddha addressed the mendicants, “Mendicants!” “Venerable sir,” they replied. The Buddha said this:

“Take a mendicant who declares enlightenment: ‘I understand: “Rebirth is ended, the spiritual journey has been completed, what had to be done has been done, there is nothing further for this place.”’

You should neither approve nor reject that mendicant’s statement. Rather, you should question them: ‘Reverend, these four kinds of expression have been rightly explained by the Blessed One, who knows and sees, the perfected one, the fully awakened Buddha. What four? Saying you’ve seen, heard, thought, or known something, and you have. These are the four kinds of expression rightly explained by the Blessed One, who knows and sees, the perfected one, the fully awakened Buddha. How does the venerable know and see regarding these four kinds of expression so that your mind is freed from defilements by not grasping?’