萬松老人評唱天童覺和尚頌古從容庵錄 3.121

3.121

舉。曹山問德尚座。佛真法身猶若虛空（官不容針）應物現形如水中月（私通車馬）作麼生說箇應底道理（叉手近前云喏）德云。如驢覻井（落花有意隨流水）山云。道即大曬道只道得八成（欲窮千里目）德云。和尚又如何（更上一層樓）山云。如井覻驢（流水無心送落花）。

Case: Caoshan asked Elder De, "The Buddha's true dharmakāya is like empty space;(Officially, not even a needle is admitted.)
It manifests forms in response to things like the moon in the water.(Privately, carts and horses may pass.)
How do you explain the principle of responding?"(Clasping his hands and stepping forward, he says, "Yes.")
De said, "Like a donkey peering into a well."(Falling flowers intentionally follow the flowing stream.)
Shan said, "You have indeed said a great deal, but you have only said eighty percent."(Wishing to exhaust the view of a thousand leagues,)
De said, "What about the Venerable?"(One climbs another flight of stairs.)
Shan said, "Like a well peering at a donkey."(The flowing stream has no mind to escort the falling flowers.)