說無垢稱經疏 3.76

3.76

贊曰：下觀可厭污。合有七句，此中有二。不淨有五：一種子不淨，感業所招，父母精血所共成故。二住所不淨，於其母胎生熟藏間，所依住故。三自相不淨，三十六物所集成故。四共相不淨，九孔常流諸穢惡故。五畢竟不淨，身壞以後成糞成灰等故。故言不淨穢惡充滿，雖復種種塗香洗浴，終必歸於不淨臭穢。是身虛危，誰非不淨？不淨之物必是虛偽，歸磨滅故。

Commentary: Below is the contemplation of what is loathsome and defiled. In total there are seven phrases, and here there are two. There are five kinds of impurity: first, impurity of seed, because it is incurred by motivated karma and formed together by the semen and blood of parents. Second, impurity of dwelling, because it relies upon and dwells between the receptacle of raw food and the receptacle of cooked food in the mother's womb. Third, impurity of intrinsic characteristic, because it is formed by the accumulation of the thirty-six substances. Fourth, impurity of common characteristic, because all filth constantly flows from the nine orifices. Fifth, ultimate impurity, because after the body breaks up, it becomes excrement, ash, and the like. Therefore it is said: "Impure and filled with filth." Even if one repeatedly applies various perfumed ointments and bathes it, it will ultimately return to being impure and foul-smelling. This body is frail and perilous; what about it is not impure? An impure object must be false and deceptive, because it returns to destruction.