Literature Reference: 可洗机巧心，可荡尘垢肠。—— 《咏兴五首 池上有小舟》 It can wash away a cunning heart, and cleanse the intestines of dust and dirt. Source from 'Five Poems of Yongxing: A Small Boat on the Pond.'
尘: Dust and loess.
垢: Filth, dirt. Grime, stubborn and hard-to-remove dirt. Carries a negative connotation, use with caution.
Meaning: Dust and dirt symbolize the disturbances and impurities of the mundane world.