首楞嚴義疏注經 3.317

3.317

「汝觀地性，麁為大地，細為微塵，至隣虛塵。析彼極微色邊際相，七分所成，更析隣虛即實空性。」

"Consider the nature of earth: coarsely it is the great earth, finely it is a subtle particle of dust, down to a dust particle bordering on voidness. If one analyzes that paramāṇu, which is the boundary mark of matter, into seven parts, and further analyzes the particle bordering on voidness, it is the true nature of emptiness."