瑜伽論記 7.73

7.73

十六依四念住，古來四四配之。一、觀息長；二、觀息短；三、觀息遍身；四、息除身行，此四觀身。

The sixteen are based on the four stations of mindfulness, which have traditionally been matched four by four. 1. Contemplating the breath as long; 2. Contemplating the breath as short; 3. Contemplating the breath throughout the whole body; 4. Calming the bodily formation. These four contemplate the body.