一尘不缁

Explanation: Still spotless. Refers to no hint of bad habits and bad influences. Also used to describe a very clean, clean. 　　Source: Ming Lian "White Hall Zhen Ji" Church planting a few plum trees, when frost Yan Ze occasion, the petals shake off, but Alice flowers alone however, scattered and ice for the spring and Yan Yu, Yi-Chen does not Buddhists their Pa . "