瑜伽論記 7.515

7.515

前中，於時時中已下，是簡五相也。言於時時中，內心寂靜者，修止行也。於時時中，由隨相行毘鉢舍那思擇諸法者，修於觀也。於自他身內外等者，謂於自他未死身內外不淨及死後出送塚間青瘀等位數起勝解取不淨相，又復攝心於內寂靜，此中若自他身根名內，扶根塵名外，亦可取自他身身內不淨名內，若取自他身之外相不淨名外。

In the former part, from "from time to time" onward, it selects the five marks. The phrase "from time to time, the inner mind is tranquil" refers to cultivating the practice of calm abiding. "From time to time, discerning dharmas through insight that follows marks" refers to cultivating insight. "Regarding the internal and external of one's own and others' bodies, and so forth" means repeatedly generating resolute intention to take the marks of impurity from the internal and external impurities of one's own and others' living bodies, as well as the blue-bruised stages when carried out to the charnel ground after death, and again withdrawing the mind into internal tranquility. Here, if one's own and others' physical sense faculties are called internal, the physical dust supporting the faculties is called external; alternatively, apprehending the internal impurities of one's own and others' bodies is called internal, and apprehending the external impure marks of one's own and others' bodies is called external.