瑜伽論記 22.514

22.514

初約生處。言樂者，謂起第三靜慮者，樂受增處而說也。樂所隨者，謂在人中容有二種者，景師云：人中苦樂至起然名樂受所隨。達師云：身生人中樂隨眠所隨逐故云所隨，所有苦樂二種種子，故云容有二種。言未永離樂者，謂在第四靜慮已上者，樂雖不行猶成樂種，名未永離。此中苦者，謂在鬼畜者，此據一分鬼畜純受苦處名苦自性。

First, regarding the place of rebirth: as for "pleasure," this refers to those who give rise to the third dhyāna, spoken of as the place where pleasurable feeling is predominant. As for "followed by pleasure," meaning "in the human realm there can be two kinds": Master Jing says: "Although suffering and pleasure arise alternately in the human realm, it is called followed by pleasurable feeling." Master Da says: "When the body is born in the human realm, it is pursued by the latent tendencies of pleasure, hence it says 'followed'; there are seeds of both kinds, suffering and pleasure, hence it says 'there can be two kinds.'" As for "not yet having permanently departed from pleasure," referring to those in the fourth dhyāna and above: although pleasure does not actively manifest, the seeds of pleasure are still formed, so it is called "not yet permanently departed." "Suffering" here refers to those in the realms of ghosts and animals: this is based on a portion of ghosts and animals who experience purely suffering states, which is called the essential nature of suffering.