釋禪波羅蜜次第法門 4.36

4.36

三、明治昏沈心中覺觀者，覺觀起相如前說，對治之法，應教令觀息，息入時，諦觀此息從何處來，中間何所經遊，入至何處住。口出息亦如是。此法後當廣說。如是求其根源，出無分散，入無積聚，不見定想，明心觀照，心眼即開，破於沈昏。靜心依息，能破散亂，故以觀息對治沈昏覺觀之病。

Third, explaining the treatment of vitarka and vicāra within a torpid mind: the symptoms of vitarka and vicāra arising are as explained before. As for the method of counteraction, one should teach them to contemplate the breath: when the breath enters, carefully contemplate where this breath comes from, what it traverses along the way, and where it enters and abides; the breath exiting through the mouth is also like this. This method will be explained extensively later. Seeking its source in this way, leaving there is no dispersal, entering there is no accumulation; not seeing any fixed notion, illuminating with a bright mind, the mind's eye then opens, shattering torpor. Calming the mind to rely on the breath can shatter scattering and distraction; hence, contemplating the breath is used to counteract the disease of vitarka and vicāra in torpor.