菩薩從兜術天降神母胎說廣普經 1.56

1.56

佛告曰：「言地地自空，言水水自空，言火火自空，言風風自空，言識識自空，言空空自空。何者是身？云何是觀？」

The Buddha told him: "To speak of earth, earth is itself empty; to speak of water, water is itself empty; to speak of fire, fire is itself empty; to speak of wind, wind is itself empty; to speak of consciousness, consciousness is itself empty; to speak of space, space is itself empty. What is the body? What is contemplation?"