俱舍論記 26.126

26.126

「論曰至念住」者，釋初兩句。見道位中隨起八忍、七智，皆即彼類於未來修，忍自修忍、智自修智。然能具修自諦下四行相念住，得忍未得智、得智忍已得，互不相修。所修忍智通四行相及四念住故，各具修四。

On the passage beginning with "The treatise states: ... applications of mindfulness": this explains the first two lines of verse. In the stage of the path of seeing, whichever of the eight tolerances or seven cognitions arises, in the future one cultivates that very class: tolerances cultivate tolerances of themselves, and cognitions cultivate cognitions of themselves. However, one is fully able to cultivate the four aspects and applications of mindfulness under its own truth. When one has acquired tolerance, one has not yet acquired cognition; when one has acquired cognition, one has already acquired tolerance; they do not mutually cultivate each other. Because the tolerances and cognitions cultivated pervade the four aspects and the four applications of mindfulness, each fully cultivates all four.