《北史·本记·卷三》
下诏将代郡视同西汉的丰沛，代人过去被发配戍边的都免除服役。
诏以代郡事同丰沛，代人先配边戍者免之。
The emperor issued an edict to treat the Dai Commandery as the Fengpei of the Western Han, and all the people of Dai who had been exiled to serve on the border were exempted from service.