唯識二十論述記 2.93

2.93

述曰：以微所對東、非東等，日照東時，即是照於西等之處，既無極微，隨有一邊光所不及，故照東時，西應無影。應立量云：日照柱等時應無有影；無東、西等諸方分故；如虛空等。《成唯識》說：「若無方分，則如非色，云何和合承光、發影？承光、發影處既不同，所執極微定有方分」，以現量破。

Commentary: Because the east faced by a paramāṇu is not east and so forth, when the sun shines on the east, it is precisely shining on the west and other places. Since a paramāṇu has no side that the light does not reach, when it shines on the east, there should be no shadow in the west. A formal inference should be formulated: "When the sun shines on a pillar or the like, there should be no shadow; because it lacks various spatial divisions such as east and west; like empty space and the like." The Cheng weishi lun states: "If they have no spatial divisions, they would be like non-matter. How could an aggregate receive light and cast a shadow? Since the place receiving light and the place casting a shadow are different, the posited paramāṇus must have spatial divisions." This refutes it by pratyakṣa.