大般涅槃經集解 61.30

61.30

案僧亮曰：凡七譬，不淨門也。七種者，一種子不淨、二住處不淨、三出門不淨、四體性不淨、五九孔不淨、六諸虫不淨、七污淨物衣服。

Sengliang comments: "Altogether there are seven analogies, which are the portal of impurity. The seven kinds are: first, impurity of seed; second, impurity of dwelling place; third, impurity of exit; fourth, impurity of essential nature; fifth, impurity of the nine apertures; sixth, impurity of the various worms; and seventh, polluting pure objects and clothing."