成唯識論述記 7.419

7.419

述曰：若八識定異者，十卷《楞伽》第十卷，頌說：「八識如大海，水、波無有差別相」，及前所引五十一等云：依一大海、鏡面，起多浪、像，無差別故。第二、定異應非因果，更互為因果故，法爾因果非定異，如麻不生豆等芽故。第三、又一切法如幻事、陽炎、夢影等，故知無定異性。此非一、異，依四勝義對四世俗皆得，如理應思。

The Commentary states: If the eight vijñānas were determinately different, in the tenth fascicle of the ten-fascicle Laṅkāvatāra-sūtra, a verse states: "The eight vijñānas are like the great ocean; water and waves have no distinguishing marks"; and as cited earlier from the fifty-first [fascicle of the Yogācārabhūmi] and so forth, which says: Relying on a single great ocean or mirror surface, multiple waves or images arise without distinction. Second: If they were determinately different, they could not be cause and fruit, because they mutually serve as cause and fruit, and cause and fruit by their very nature are not determinately different, just as hemp does not sprout bean sprouts and the like. Third: Furthermore, all dharmas are like illusions, mirages, dreams, reflections, and so on; therefore we know they have no determinately different nature. This being neither one nor different can be established across the four ultimate truths contrasted with the four conventional truths; this should be considered in accordance with the principle.