瑜伽論記 7.74

7.74

五、觀喜入出息；六、觀樂入出息；七、觀心行入出息；八、觀息除心行入出息，此四觀受。

5. Contemplating inhaling and exhaling with joy; 6. Contemplating inhaling and exhaling with pleasure; 7. Contemplating inhaling and exhaling with mental formation; 8. Contemplating inhaling and exhaling while calming mental formation. These four contemplate sensation.