瑜伽論記 7.78

7.78

二、別釋十六，解身四中，三藏云：噓氣吸氣氣息即長，中間入息，中間出息，暫時名短。

Second, specifically explaining the sixteen: in explaining the four concerning the body, the Tripiṭaka Master says: When exhaling and inhaling breath, the breath is long; the intermediate inhalation and the intermediate exhalation, occurring briefly, are called short.