Ezekiel 46:20-21

20He said to me, “This is the place where the priests shall boil (cook) the guilt offering and the sin offering, and where they shall bake the grain offering, so that they do not bring them out into the outer courtyard to transmit holiness to the people.”

21Then he brought me out into the outer courtyard and led me across to the four corners of the courtyard; and behold, in every corner of the courtyard there was a small courtyard.