俱舍論疏 13.61

13.61

論「又諸所有至假立長等」，無別形微難也。如有對青等析至極微，有別極微猶名青等。形微若實，折至極微微應名長等。形若別有，應有極微名為長等，故知長等但是安布顯色假名長等。

On the Śāstra's statement: "Furthermore, for all [... to ...] long and so forth are provisionally designated": This is the refutation based on the absence of distinct shape-atoms. For example, when obstructive blue and so forth are broken down into atoms, the distinct atoms are still called blue and so forth. If shape-atoms were real, when broken down into atoms, the atoms would have to be called long and so forth. If shape were distinct [from visible color], there would have to be atoms called long and so forth; therefore we know that "long" and so forth are merely provisional designations for the arrangement of visible color.