《周礼·夏官司马·山师&都司马》
匡人负责宣达八法、八则，用以匡正诸侯国，而观察是否有为奸作恶的，使他们不敢违背法度，而听从王的命令。
匡人掌达法则，匡邦国，而观其慝，使无敢反侧，以听王命。
Kuang are responsible for proclaiming the eight laws and eight rules, to rectify the feudal states and to investigate any malicious or evil acts, so that they dare not violate regulations and instead obey the king's orders.