《礼记·内则》
不管是家妇、介妇，如果公婆没有发话让他们回自己的住室，她们就得一直在左右侍候，不敢告退。
妇将有事，大小必请于舅姑。子妇无私货，无私畜，无私器，不敢私假，不敢私与。
Regardless of whether it is a housewife or a medium-wife, if the in-laws have not told them to return to their own residence, they must always be on the left and right to serve, and do not dare to resign.