The aggregates are to be fully understood, and the full understanding is the ending of defilements.At Sāvatthī. “Mendicants, I will teach you the things that should be completely understood, and complete understanding. Listen … And what things should be completely understood? Form, feeling, perception, choices, and consciousness. These are called the things that should be completely understood. And what is complete understanding? The ending of greed, hate, and delusion. This is called complete understanding.”