如人锻铁,去滓成器,器即精好。
学道之人,去心垢染,行即清净矣。
— 释迦牟尼佛
《四十二章经》: 第三十五章
Like people forging iron, ridding sediments to become wares, the wares are then excellent and beautiful. Of people learning the path, ridding their minds’ defilements, their practices are then pure.
— Śākyamuni Buddha
(Sūtra Of 42 Sections: 35th Section)