The Ontology of Mind and Matter in Yoga

In Samkhya philosophy we have this distinction between Purusha and Pragwati. On the other hand one thing that I guess might surprise someone coming to this yoga text is that the so-called mental organ, the thing you actually are sort of using in everyday applications of cognition, isn't identified with the mind. It takes the content of consciousness which is displayed to it like in the mirror as affecting itself. This fundamental ontological error causes pain and suffering to the consciousness. The task of the yogi is to dis-identify himself with the content that is displayed to him by means of the experience in meditation of theontological difference between mind and matter.