《宋史·志·卷四》
娄三颗星，是天的刑狱，主管园林中放牧用作牺牲的牲畜，供给郊外祭祀天地，也是兴兵聚众。
娄三星，为天狱，主苑牧牺牲，供给郊祀，亦为兴兵聚众。
The three stars of Lou are the punishment of heaven, and they are in charge of grazing livestock in parks for sacrifice, and supplying them for suburban sacrifices to heaven and earth, which is also to raise troops and gather people.