釋禪波羅蜜次第法門 5.20

5.20

Second, in distinguishing the marks of breath, there are four: 1. wind; 2. panting; 3. vapor; 4. breath. The differentiation of these four marks is fully as explained in [the section on] regulating the breath. However, counting wind causes scattering; counting panting causes knotting; counting vapor causes fatigue; counting breath leads to absorption. The practitioner should abandon the three and retain the breath, skillfully adopting the mark that is without sound, unknotted, continuous, and as if present yet as if absent, and use that.