Shoyoroku - Case 99: Unmon's "Bowl and Pail" [1]

A monk asked Unmon, 
  "What is the dust-dust samadhi [2] ?"
Unmon said, 
  "Rice in the bowl, water in the pail." 

[1]: see case 50 of Hekiganroku.
[2]: The word "dust" comes from the expression "six dust particles," which
     means the same thing as the "six objects" (cf. note to Case 75).