Huangbo's Gobblers of Dregs (BCR11)

KOAN:

Huangbo said, “You’re all gulping down the brewers dregs. If you keep
running around like this, where will you find today? Don’t you know yet that there
isn’t a single Chan teacher in the whole country?”
A student stepped forward and asked, “But what about all those places where
people are guiding students and leading communities?”
Huangbo said, “I didn’t say no Chan; it’s only a matter of no teachers.”

– Blue Cliff Record, Case 11