Renounce all impurities, having left bonds; without grasping, oh monks, you have attained final nibbana.

Paṭinissagga — renunciation, handing over. Not possession of what is released, it is complete surrender. Without saying “this is mine, I release it,” but simply releasing.

Āsava — impurities, mental flows that contaminate. There are four: sensuality, becoming, ignorance, and views.