《宋书·志·卷十八》
三台五省二品文官插笔。王公侯伯子男卿尹及武官不插笔。
三台五省二品文官簪之；王公侯伯子男卿尹及武官不簪。
Civilian officials of the first second and third grades from the three governorates and five provinces could wear the Bi. Princes, dukes, marquises, counts, viscounts, barons, and military officers could not wear the Bi.