泥而不滓

Explanation: Not stained black. Analogy abstinence, not a bad influence. Mud, through "nirvana." Black. Sediment, through "Black." Black. 　　Source: "Shi Ji Yuan Jia Sheng Biography" wash mud into the sludge, dirty cloud free oneself in order to floating dust, the dirt has not been the world of AIDS, Jiao natural mud sediment are also not. " 　　Examples: ~, Dirty free oneself outside of those poems. ★ Ming Wang Shizhen "Zhiyan" Volume Thesaurus:  Lightness finds, be soaked in a dark liquid without becoming back