The bodhisattva of compassion practicing Prajñāpāramitā (Zazen) sees the five skandhas as empty and thereby relieves all suffering.
So, the practice is seeing the emptiness of the five skandhas. Not as a preliminary to something else. Not in order to experience emptiness per se, or to experience something else. Not you seeing. The practice is seeing the emptiness of the five skandhas. That’s it.
That’s the practice. The five skandhas are form, sensation, perception, fabrication and consciousness. Form, this is my body. Sensation, my body is feeling something. The feeling is mine. Perception, that something I am feeling is sadness. Fabrication, I am feeling sad because…. Consciousness, ah there I go again.
Seen through emptiness, consciousness becomes compassionate vast space awareness. Fabrication is set aside and in that non doing is nirvana. Perception is set aside and the world is released from our mind. Hence Prajñā appears. This sensation, this body is part of an unbroken whole; the body of the whole world.