瑜伽師地論略纂 6.132

6.132

「一、不決定故；二、同所成者」下，此第二復次釋立同類、異類所以。此言意顯因於宗過，名為不成；於同異喻過，名為不定；於宗喻過，名曰相違。　不決定故者，即六不定也。因於同異喻相違故，不能決定成其宗義。　同所成者，即四不成，四相違也。本立共因，擬成宗果，因既帶似，理須更成；若更成之，與宗無別，故名同所成也。似同異喻亦在此攝。

Under "first, due to inconclusiveness; second, being equal to what is to be established": this second section furthermore explains the reasons for establishing the similar and dissimilar examples. What these words mean to show is that a defect of the reason with respect to the thesis is called unproven (asiddha); with respect to the similar and dissimilar examples, it is called inconclusive (anaikāntika); with respect to both thesis and examples, it is called contradictory (viruddha). "Due to inconclusiveness" refers to the six kinds of inconclusive reasons: because the reason is contrary with respect to the similar and dissimilar examples, it cannot definitively establish the meaning of its thesis. "Being equal to what is to be established" refers to the four unproven reasons and the four contradictory reasons. Originally, a mutually accepted reason is set forth intending to establish the result, which is the thesis; since the reason carries a semblance, in principle it must be established again. If it must be established again, it is no different from the thesis; hence it is called "equal to what is to be established." Semblance of similar and dissimilar examples are also included here.