Ezekiel 46:22-26

In the four corners of the court there were courts joined of forty cubits long and thirty broad: these four corners were of one measure.

And there was a row of building round about in them, round about them four, and it was made with boiling places under the rows round about.

Then said he unto me, These are the places of them that boil, where the ministers of the house shall boil the sacrifice of the people.