《魏书·帝纪·卷八》
九月初二，因贵族豪门崇尚奢侈，世宗下诏让尚书立下严格的等级，以节制其风气。
九月丙辰，以贵族豪门崇习奢侈，诏尚书严立限级，节其流宕。
On the second of the ninth month, as the aristocratic elite indulged in extravagance, Emperor Xiaowen decreed that the Ministry of Works establish strict ranks in order to control their behaviour.