大乘義章 5.12

5.12

次辨斷處。初皮障者，始從解行至歡喜地斷之窮盡。故《地持》云「初阿僧祇解行住過入歡喜地，皮障斷也。」第二膚障，始從初地至第八地，斷之究竟。故《地持》云「第二僧祇遠行住過入不動地，膚障斷也。」第三骨障，始從八地至如來地，究竟窮盡。故《地持》云「第三僧祇過畢竟住入如來地，骨障斷也。」相續解脫，亦如此說三障之義。略辨如是。

Next, to distinguish the loci of severance: First, the outer-skin obscuration is severed completely beginning from [the stage of] resolute practice up to the Joyous Bhūmi. Hence the Bodhisattvabhūmi states: "Having passed the abode of resolute practice in the first asaṃkhyeya [eon] and entered the Joyous Bhūmi, the outer-skin obscuration is severed." Second, the inner-skin obscuration is severed definitively beginning from the first bhūmi up to the eighth bhūmi. Hence the Bodhisattvabhūmi states: "Having passed the Far-Reaching Abode in the second asaṃkhyeya and entered the Immovable Bhūmi, the inner-skin obscuration is severed." Third, the bone obscuration is severed definitively and completely beginning from the eighth bhūmi up to the Tathāgata stage. Hence the Bodhisattvabhūmi states: "Having passed the Ultimate Abode in the third asaṃkhyeya and entered the Tathāgata stage, the bone obscuration is severed." The Saṃdhinirmocana also speaks of the meaning of the three obscurations in this manner. The explanation of them is briefly distinguished as above.