俱舍論記 1.156

1.156

「顯立名因至名為無表」者，釋第四句。顯立無表名之因緣，故言由此。表、無表二，雖同色業為性，表能表示心等令他了知；無表不能表示心等令他了知，故名無表。論主不信如是無表別有體相，故言此是師宗所說。略說表業所生善、不善色，及定所生善色，名為無表。

Regarding "Indicating the reason for establishing the name […] it is called non-informative": Explains the fourth line. Indicating the causes and conditions for establishing the name "non-informative", it therefore says "from this". Although both informative and non-informative [matter] have physical karma as their nature, informative [matter] can reveal the mind and so forth to make it known to others; non-informative [matter] cannot reveal the mind and so forth to make it known to others, so it is called non-informative. The master of the treatise does not believe that such non-informative [matter] has a distinct substantial characteristic, so he says, "This is what is stated by our school's teachers." In brief, wholesome and unwholesome matter born of informative karma, and wholesome matter born of meditative absorption, are called non-informative [matter].