《北史·列传·卷五十》
太常卿苏威建议，因为人口日益增多，而耕地并不太多，应减少功臣们的封地，以分给百姓。
太常卿苏威议，以为户口滋多，人田不赡，欲减功臣之地以给人。
The Minister of Rituals, Su Wei, suggested that because the population was increasing day by day, but there was not much arable land, the enfeoffments of the meritorious subjects should be reduced, so that they could be distributed to the common people.