瑜伽論記 10.516

10.516

此以六門作法故，若取餘智即數增之，故不說也。又因果門，因中四智，攝智周故，果中二智，攝智周故。

Because they construct the formulation by means of six approaches; if other knowledges were included, the numbers would increase, hence they are not mentioned. Furthermore, in terms of cause and fruition: in the cause, four knowledges subsume knowledges comprehensively; in the fruition, two knowledges subsume knowledges comprehensively.