成唯識論演祕 3.701

3.701

同《無性論》。彼第一云：所知依者，簡取能依雜染、清淨諸有為法，不取無為，由彼無有所依義故。

This agrees with Asabhāva's Commentary. Its first fascicle says: 'The basis of the knowable excludes and takes the conditioned dharmas, both defiled and pure, that depend upon it; it does not take the unconditioned, because the unconditioned lacks the meaning of being a support.'