What is "out-of-door relief"? What is its great principle, according to Mr. Bumble?

Mrs. Corney, matron of the workhouse where Oliver was born, is just about to sit down for a cup of tea when Mr. Bumble appears. Mr. Bumble explains the concept of out-of-door relief, which is to give the poor people exactly what they don’t want so that they won’t come back.