大乘百法明門論開宗義決 1.155

1.155

Regarding "not abandoned by vision": this is the section distinguishing the three abandonments. Because faith and the like include both the contaminated and the uncontaminated, they are subsumed under both what is abandoned by cultivation and what is not to be abandoned. If, although contaminated, they are not confused about principle, they are not abandoned by vision; but since they are confused about phenomena, they are gradually abandoned in the path of cultivation. If they are uncontaminated, they are what is genuinely cultivated and should not be abandoned; hence they are not to be abandoned.