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?
四十五 他是阿誰 | hide chinese .
show chinese | 東山演師祖曰、釋迦彌勒猶是他奴。
Hoen of Tozan said, "Even Shakya and Maitreya are servants of another. 且道、他是阿誰。
I want to ask you, who is he?"
Mumon's Comment 無門曰、
If you can really see this "another" with perfect clarity, it is like encountering your own father at a crossroads. Why should you ask whether you recognize him or not?