淨名經集解關中疏 1.281

1.281

是身不實四大為家　此身骨肉等地大。血髓等水大。煖氣等火大。喘息等風大。不了四大妄計為身。假會為家。非實身也。

"This body is unreal; the four great elements serve as its home." In this body, bones, flesh, and the like are the earth element; blood, marrow, and the like are the water element; heat and warmth are the fire element; and respiration and breath are the wind element. Not understanding the four great elements, people falsely grasp them as a body. Being a provisional combination, it is a home, not a real body.