瑜伽師地論略纂 9.23

9.23

The treatise states: "Because one repeatedly cultivates this very [equanimity, and so forth], one is able to discard the superior pleasure of the stage of the third dhyāna, which prevented emancipation from the third dhyāna; therefore, it is said: 'because pleasure is abandoned.'" Here, the pleasure bound to the third dhyāna binds the practitioner, preventing emancipation from the third dhyāna so that one cannot attain that higher fourth absorption. Now, repeatedly cultivating equanimity, mindfulness, and so forth, one is able to discard this absorption's pleasure.