《魏书·列传·卷一》
当初，高祖孝顺太后，就在永固陵东北一百多里的地方，预先营建陵墓，有死后陪伴太后的心愿。
初，高祖孝于太后，乃于永固陵东北里余，豫营寿宫，有终焉瞻望之志。
At that time, Emperor Gaozu was filial to the empress dowager, so he had a tomb built in advance over a hundred li northeast of Yonggu Ling. He wished to accompany the empress dowager after his death.