《三国志·魏书·王卫二刘傅传》
咸熙年间，朝廷开始设立五等爵位制度，因为傅嘏在前朝有很大功劳，改封傅祗为泾原子。
咸熙中开建五等，以嘏著勋前朝，改封祗泾原子。
During the Xianxi era, the court established a system of five grades of nobility. In recognition of Fu Gu’s great achievements in the previous era, Fu Zhi was recognized as Duke of Jingyuan.