瑜伽論記 19.36

19.36

泰云：初二隨惑緣內緣外起為定退因，次二隨惑亦緣內外是退定體；第五善取定止舉捨三相對治第一第二；第六不淨觀對治第二第四，以第二第四緣外五欲起於舉及散亂故，所以不淨觀治；第七光明想為方便能起第五第六對治，故為彼二對治依持也。二釋大同。

Tai says: the first two secondary defilements arise conditioned by the internal and external and serve as causes of deterioration of concentration; the next two secondary defilements also condition the internal and external and constitute the substance of the deterioration of concentration; fifth, properly grasping the three signs of concentration—calm, exertion, and equanimity—counters the first and second; sixth, the contemplation of impurity counters the second and fourth, because the second and fourth arise as agitation and distraction conditioned by external five desires, and are therefore countered by the contemplation of impurity; seventh, the perception of light serves as an expedient means able to give rise to the fifth and sixth antidotes, and thus serves as the support and foundation of those two antidotes. The two explanations are largely the same.