成唯識論述記 5.911

5.911

述曰：又在五識逼迫、適悅俱無分別，名為苦、樂；意有分別，逼迫、適悅，故是憂、喜。又在五識逼迫、適悅，二俱麁重，故名苦、樂；在意輕微，故名憂、喜。又在意識動勇逼、悅，故名憂、喜；在五識中，但動而不勇，故名苦、樂。是二別相。動者麁動；勇者勇躍。

The Commentary states: Furthermore, in the five consciousnesses, torment and gladdening are both non-conceptual, and thus are called pain and pleasure; the mind has conceptual torment and gladdening, and thus is grief and joy. Furthermore, in the five consciousnesses, torment and gladdening are both coarse and heavy, and thus are called pain and pleasure; in the mind, they are subtle, and thus are called grief and joy. Furthermore, in the mental consciousness, torment and gladdening are active and elated, and thus are called grief and joy; in the five consciousnesses, they are merely active but not elated, and thus are called pain and pleasure. These are the distinct characteristics of the two. 'Active' means coarsely stirring; 'elated' means leaping with enthusiasm.