佛果圜悟禪師碧巖錄 4.21

4.21

The pointer says: To determine dragons from snakes, to distinguish jade from stone, to separate black from white, and to resolve hesitation—if one does not have an eye on top of one's head and a talisman under one's elbow, one will often miss it right before one's face. Just now, seeing and hearing are not obscured, sounds and forms are pure and true: tell me, is it black or white, crooked or straight? Arriving here, how do you discern it?