俱舍論記 10.122

10.122

「依五識身至故不應難」者，會釋經文。依五識身所引意近行，如依眼識引意地不淨觀。既有已言，顯非五識，不應為難。

"Induced based on the five consciousness-bodies... therefore one should not object": this resolves and explains the sūtra passage. They are mental explorations induced based on the five consciousness-bodies, just as based on the eye consciousness one induces the contemplation of impurity in the mental stage. Since there is the word "having [seen, etc.]," it shows that it is not the five consciousnesses; therefore, one should not raise this objection.