大乘義章 5.21

5.21

次辨同異。今此三使與皮膚骨三障何別？釋言：三使是煩惱障，彼三障者是其智障。故彼《相續解脫經》中就煩惱障宣說三使，就智障中宣說三過。三過猶是《地持論》中皮膚骨等智障所攝。煩惱即是四住之惑，智障即是無明住地。三使之義，略辨如是。

Next, to determine their identity and difference: What difference is there between these three proclivities and the three obscurations of skin, flesh, and bone? The explanation is: The three proclivities are afflictive obscurations (kleśāvaraṇa), whereas those three obscurations are cognitive obscurations (jñeyāvaraṇa). Therefore, in that *Saṃdhinirmocana-sūtra*, the three proclivities are expounded in terms of afflictive obscurations, and the three faults are expounded in terms of cognitive obscurations. The three faults are precisely what are subsumed under the cognitive obscurations of skin, flesh, and bone in the *Bodhisattvabhūmi-śāstra*. Affliction is the delusion of the four entrenchments, while cognitive obscuration is the entrenchment of ignorance. The doctrine of the three proclivities is briefly distinguished as such.