Yogācārabhūmi Śāstra, Volume 34 (8)

Original text: 安立如是内外事已。复于彼事现见增上作意力故。以变异行寻思观察无常之性。此中内事有十五种所作变异。及有八种变异因缘。云何内事有十五种所作变异。一分位所作变异。二显色所作变异。三形色所作变异。四兴衰所作变异。五支节具不具所作变异。六劬劳所作变异。七他所损害所作变异。八寒热所作变异。九威仪所作变异。十触对所作变异。十一杂染所作变异。

Explanation: After establishing these internal and external matters, in order to directly perceive these matters, one strengthens the power of intensified attention (adhimātra-manaskāra-bala) for seeing the Dharma, and from the perspective of the changes of all dharmas, one deliberates upon and contemplates the impermanence of internal and external matters. Among them, internal matters have fifteen kinds of changes, and there are eight causes and conditions for these changes. What are the fifteen kinds of changes in internal matters? The first is the change of positional stages as the material body passes through different periods; the second is the change that appears in manifest color, such as the black, white, red, or yellow of the skin; the third is the change that appears in shape and form, such as tall or short, fat or thin, and so on; the fourth is the change that appears in the flourishing and decline of the material body, such as having strength or lacking strength; the fifth is the change that appears in the limbs and joints of the body faculty, such as mutilations like a severed arm or a broken leg;

the sixth is the change that appears in labor, such as being fatigued or not fatigued; the seventh is the change that appears in being harmed by others, such as being bullied, framed, slandered, having one's reputation damaged, and so on; the eighth is the change that appears in cold and heat, such as having a fever, being sensitive to cold, and so on; the ninth is the change that appears in deportment and movement, such as the material body becoming sluggish, hunched over, or having difficulty moving; the tenth is the change that appears in the objects of contact, such as changes and alterations in the people, things, and affairs one contacts; the eleventh is the change that appears in actions performed with a defiled mind, such as the transformation of wholesome and unwholesome karma; the twelfth is the change that appears in bodily illness, such as being formerly healthy and now suffering from sickness and pain; the thirteenth is the change that appears in death, when life comes to an end; the fourteenth is the change that appears after death when the body becomes bruised, swollen, and bloated; the fifteenth is the change that appears after death when the corpse vanishes without a trace, and even the ashes leave no trace.