金光明最勝王經疏 3.378

3.378

贊曰：第二復次中第二隨喜。隨者順也，喜者慶悅故。隨即以信、欲、勝解三法為體，故《成唯識》云「若印順者，體即勝解。若樂順者，體即是欲。」忍既信因，欲即信果，故信及因果為其隨體。喜即喜受，或此喜者非必喜受，但心心所總聚假立慶悅名喜。或即不嫉，故喜無量，以不嫉為體。此釋為正。因隨生喜，即隨之喜，或亦隨亦喜名為隨喜。

The Commentary states: This is the second section of the second part, rejoicing. Following (隨) means conforming; rejoicing (喜) means celebration and delight. Following takes faith, desire, and resolute resolve as its essential nature; thus the *Vijñaptimātratāsiddhi* says: "If it is approving and conforming, its essence is resolute resolve. If it is delighting and conforming, its essence is desire." Since endurance is faith in the cause, and desire is faith in the result, therefore faith together with cause and effect constitute the essence of following. Rejoicing is the feeling of joy; or else this joy is not necessarily the feeling of joy, but is merely established nominally from the whole assemblage of mind and mental factors as celebration and delight, termed "joy." Or it is non-jealousy; therefore the immeasurable joy takes non-jealousy as its essence. This explanation is correct. Joy arises because of following, meaning joy in following; or it is both following and rejoicing, termed "rejoicing with others."