Dongshan’s Jewel Mirror Samadhi (BCR13)

KOAN:

The teaching of suchness, intimately given by the buddhas and ancestors—
now that it’s yours, keep it well.

A silver bowl filled with snow,
a white heron hidden in the moonlight—

Apart, they seem similar; together, they’re different.

The clear-sighted person falls into a well.

What is the sword so sharp it cuts a hair blown against it?

Each branch of coral holds up the moon.

—Blue Cliff Record, Case 13