[369] At Sāvatthī. Then the Venerable Rādha approached the Blessed One; having approached, he paid homage to the Blessed One and sat down to one side. As the Venerable Rādha was sitting to one side, the Blessed One said this to him: "Rādha, I will teach you the things to be fully understood (pariññeyyā dhammā), full understanding (pariññā), and the person who has fully understood (pariññātāvī puggala). Listen to that and attend well; I will speak." "Yes, venerable sir," the Venerable Rādha replied to the Blessed One. The Blessed One said this: "And what, Rādha, are the things to be fully understood? Form (rūpa), Rādha, is a thing to be fully understood; feeling (vedanā) is a thing to be fully understood; perception (saññā) is a thing to be fully understood; volitional formations (saṅkhārā) are a thing to be fully understood; consciousness (viññāṇa) is a thing to be fully understood. These, Rādha, are called the things to be fully understood.
"And what, Rādha, is full understanding? The destruction of lust (rāga), the destruction of hatred, the destruction of delusion: this, Rādha, is called full understanding.
"And what, Rādha, is the person who has fully understood? It should be said: the Arahant — the venerable one of such a name, of such a clan. This, Rādha, is called the person who has fully understood."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.