《周书·本纪·卷二》
太祖派左仆射、冯翊王元季海为行台，与开府独孤信率领步兵、骑兵共二万人向洛阳推进；洛州刺史李显挺进荆州；贺拔胜、李弼渡过黄河，围攻蒲坂。
遣左仆射、冯翊王元季海为行台，与开府独孤信率步骑二万向洛阳；洛州刺史李显趋荆州；贺拔胜、李弼渡河围蒲阪。
Taizu sent Zuo Pushe and Duke Yuan Jikai of Fengyi to lead the marching camp, and cooperate with Duguxin the Establishment Duke to lead 20,000 infantry and cavalry to march on Luoyang, while Li Xian the Inspector of Luo Prefecture marched into Jing Province, and He Basan and Li Bi crossed the Yellow River to besiege Puban.