南宗頓教最上大乘摩訶般若波羅蜜經六祖惠能大師於韶州大梵寺施法壇經 1.13

English (machine translation) 1.13

"The mind is the bodhi tree,
The body is the bright mirror stand.
The bright mirror is originally pure;
Where could it be stained by dust?"

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