成唯識論述記 2.33

2.33

述曰：此第五、極微即麁色，應無障隔難。汝有對麁色應無障隔；即極微故；猶如極微。汝執有對色即是極微，極微之外無有對色。極微若無方分，麁色應亦無方分；無方分故，亦無障隔；如非色等，為量同前。《二十頌》云：「無應影障無」，此障無也。

The Commentary states: This is the fifth objection: that if atoms are identical to coarse matter, there should be no obstruction or separation. Your obstructive coarse matter should lack obstruction and separation; because it is identical to atoms; just like atoms. You hold that obstructive matter is precisely atoms, and that outside atoms there is no obstructive matter. If atoms lack spatial parts, coarse matter should also lack spatial parts; because of lacking spatial parts, there would also be no obstruction or separation; like non-material entities and the like, the formal inference being as before. The Viṃśatikā says: 'Without it, shadow and obstruction would not exist'—this refers to the absence of obstruction.