瑜伽論記 5.407

5.407

方便觀中，初一厭境觀；次一不淨觀，第三有三觀：一、苦；二、無我；三、身念住觀。

Among the contemplations of expedient means, the first is the contemplation of revulsion toward sense objects; the next is the contemplation of impurity; the third consists of three contemplations: first, suffering; second, non-self; and third, the contemplation of the application of mindfulness to the body.