首楞嚴義疏注經 4.165

4.165

"Pūrṇa! Furthermore, you asked: 'The fundamental natures of earth, water, fire, and wind are perfectly interfused and all-pervading in the dharmadhātu; yet I doubt that the natures of water and fire do not encroach upon and destroy each other.' You also interrogated: 'Empty space and the great earths all pervade the dharmadhātu; they ought not to accommodate each other.'"