瑜伽論記 7.431

7.431

又思入息。出息各有二者，一入息二中間入息，出息亦爾。復知如是為長入出息者，即知入息出息起續多時是長。如是為短入出息者，中間入出息暫起名短，如是依止淨行所緣尋思六事差別觀已。下結及指也，結前五停心觀名淨行所緣，乃至若依止善巧所緣及淨惑所緣。於其自處我後當說者下，辨善巧所緣淨惑所緣處名為自處也。

Furthermore, contemplating that inhalation and exhalation each have two aspects: first, the inhalation, and second, the intermediate inhalation; the exhalations are also like this. Furthermore, knowing "thus are long inhalations and exhalations" means knowing that when inhalation and exhalation arise and continue for a long time, they are long. "Thus are short inhalations and exhalations" means that intermediate inhalations and exhalations arising temporarily are called short. Having thus contemplated the differences of the six matters by relying on the focal object for purifying conduct, the text below concludes and points forward: it concludes the former five methods of stilling the mind as the focal object for purifying conduct, up to "if relying on the focal object of skillfulness and the focal object for purifying defilements, I will explain later in their own places"; below, identifying the places for the focal object of skillfulness and the focal object for purifying defilements is called "their own places."