《周礼·地官司徒·封人&均人》
凡散祭祀所需用的牲，拴系到国都城门的司门官那里，使负责喂养。省视牲，就报告牲体完好毛色纯。
凡散祭祀之牲，系于国门，使养之、展牲，则告牷；硕牲，则赞。
In the event of dispersing the oxen to be used for the sacrifices, tether them at the Siguan official at the gate of the national capital, for the person in charge of feeding them. When examining the oxen, report that the sacrificial animals are healthy and their fur is pure.