What Is It? (BCR51)

KOAN:

When Xuefeng was living in a hut, there were two monks who came to pay their respects. Seeing them coming, Xuefeng pushed open the door of the hut with his hand, popped out, and said, “What is it?”

A monk also said, “What is it?” Xuefeng lowered his head and went back inside the hut.

Later, Yentou said, “If you want to know the last word, just this is it.”

—The Blue Cliff Record, Case 51