Purusha is a Sanskrit word that is often translated as the Cosmic Witness (although it has other related meanings).
My comments on Nisargadatta’s statements below:
Basically when we can be aware of the fact that we are aware – then we are not just witnessing the content of consciousness, but we are That first principle quality which is untouched by all content. For me such contemplation is useful to “end” the involvement with or attachment to Consciousness even as the Witness. It is almost like all of Consciousness, starting with the sense “I am” entangles us within the web of manifestation of phenomena. Continue reading