When Yang-shan Hui-chi (807-883), as a young monk, paid a visit to the Ch'an master Hsing-k'ung, there was a monk who asked Hsing-k'ung:
-What is the meaning of the Patriarch's coming from the West?
Mumon's Comment 無門曰、參須實參、悟須實悟。
Study should be real study, enlightenment should be real enlightenment. 者箇胡子、直須親見一回始得。
You should once meet this barbarian directly to be really intimate with him. 説親見、早成兩箇。
But saying you are really intimate with him already divides you into two.
Don't discuss your dream
Before a fool.
Barbarian with no beard
Obscures the clarity.