釋禪波羅蜜次第法門 2.122

2.122

復次，坐時有風、氣等三相，是名不調，而用心者則為患也，心亦難定。若欲調之，當依三法：一者、下著安心；二者、寬身體；三者、想氣遍毛孔，出入通同無障。若細其心，令息微微然，息調則眾患不生，其心易定。是名行者初入定時調息方法。舉要言之，不澁不滑，是息調相。

Furthermore, if while sitting one has the three states of wind, air, and so forth, this is called irregular, and employing the mind in that state will cause affliction, and the mind will also be difficult to concentrate. If one wishes to regulate it, one should rely on three methods: first, settle the mind downward; second, relax the body; third, visualize the breath pervading the pores, exiting and entering freely without obstruction. If one refines the mind and makes the breath ever so subtle, once the breath is regulated, multiple afflictions will not arise, and the mind will easily settle. This is called the practitioner's method of regulating the breath upon initial entry into concentration. To state the essential point: being neither sluggish nor rushed is the mark of a regulated breath.