佛果圜悟禪師碧巖錄 5.31

5.31

【47】Case:
A monk asked Yunmen, “What is the dharmakāya?” (How many people have doubts about this? A thousand sages cannot leap out. No small amount of leaking.)
Yunmen said, “The six do not take it in.” (Cutting nails and shearing iron. An eight-cornered millstone flies in the air. A divine turtle dragging its tail. Grasping it before the omens are divided is already the second head; grasping it after the omens have arisen falls into the third head. If you further discern it in words and phrases, fortunately there is no connection).