Purification by knowledge and vision of the way (Buddhism)

The culmination of insight is reached in the eight knowledges plus a ninth, [knowledge in conformity with truth]

. These are now free of the ten imperfections and the three characteristics may be observed.

One of the five purifications or purities which constitute the trunk or body of understanding according to Hinayana Buddhism, the others being: purification or purity of view; purification or purity of overcoming doubt; purification by knowledge and vision of what is the path and what is not the path or purity of knowledge and discernment of the right path and the wrong path; purification by knowledge and vision or purity of knowledge and discernment.