公案

J. (ja) kōan; [lang id =1028]因緣 A dossier, or case-record; a cause; public laws, regulations; case-law. Problems set by Zen masters, upon which thought is concentrated as a means to attain inner unity and illumination.

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禪家指點學人， 在言語或動作上的垂示， 叫做公案。