大乘起信論義記 3.43

3.43

第二、釋相應不相應者，六染中前三是相應心，相應有二釋：一、約王數釋，以此三種皆是麁心故。言心念法異者，心謂心王，念法謂心法也，王數不同，故云異也。《迦栴延論》中，名為心及心所念法也。依染淨差別者，是所分別境也。知相緣相同者，若心王知染，心法亦同；心王緣淨，心法亦同也。知相即能知同，緣相即所緣同。二、約心境相應釋，以此三種依境生故，是上文中依境所起六相內攝也。下文云「境界滅故相應心滅。」言心念法異者，心謂能緣心，法謂所緣法塵，異謂心境不同也。依染淨乃至同故者，謂於染境作染解，於淨境作淨解，故云同也。

Second, in explaining 'conjoined' and 'unconjoined', among the six defilements the first three are conjoined mind. 'Conjoined' has two explanations. First, explaining in terms of the mind and mental factors: because these three kinds are all coarse minds. 'The dharmas of mind and mental factors are different': 'mind' refers to the king of the mind, and 'mental dharmas' refers to the mental factors; the king and the factors are not identical, hence they are called 'different'. In the *Kātyāyanaśāstra* they are called 'mind and the dharmas of mental factors'. 'Based on the differentiation of defilement and purity': this is the discriminated objective realm. 'Their aspects of knowing and aspects of objective support are identical': if the king of the mind knows defilement, the mental factors are also the same; if the king of the mind takes purity as its objective support, the mental factors are also the same. The aspect of knowing means the cognizer is identical; the aspect of objective support means what is cognized is identical. Second, explaining in terms of the conjunction of mind and realm: because these three kinds arise based on objective realms, they are subsumed under the six marks arisen based on objective realms in the text above. As the text below states: 'Because objective realms are extinguished, the conjoined mind is extinguished.' 'The dharmas of mind and mental factors are different': 'mind' refers to the cognizing mind, 'dharmas' refers to the cognized sense-dust of dharmas, and 'different' means that mind and realm are not the same. 'Based on defilement and purity... identical': it means conceiving an understanding of defilement regarding a defiled realm, and conceiving an understanding of purity regarding a pure realm, hence it is said to be 'identical'.