《资治通鉴·后周纪·后周纪一》
所有粮食仓库、场院掌管交纳的官吏，不得收取额外的 斗余 、 称耗 。
凡仓场、库务掌纳官吏，无得收斗馀、称耗。
All granaries and threshing floors where officials were in charge of handing over the grain should not charge extra for "douyu" and "chenghao".