here is what a buddha is

 
Master Ciming said to an assembly, “The body of reality is formless; it manifests forms in response to beings.”

(Dahui holds up his staff.) This is a staff — what is the reality body? Leaving this complication aside, the communal hall and Buddha shrine have gotten into your nostrils, the waters of the four great oceans are on your heads, the dragon kings are under your fingernails — do you feel them? 

If you feel them, you go three thousand by day, eight hundred by night, smoke rising under your feet, fire rising on your heads. If you don’t know, eat when hungry, sleep when tired.

(Dahui planted his staff once.)
 

Dahui