《旧唐书·列传·卷三》
李密快进洛口仓城时，邴元真已派人秘密勾结王世充，李密暗中发觉了这件事，但不公开，想等王世充的部队走到洛水的河心，再发起进攻。
密将入洛口仓城，邴元真已遣人潜引世充，密阴知之，不发其事，欲待世充兵半渡洛水，然后击之。
When Li Mi approached Luokou Cangcheng, Bing Yuanzhen had secretly brought his men over to Wang Shichong's side. Li Mi realized this in secret, but kept it to himself and planned to wait until Wang Shichong's troops were halfway across the Luo River before attacking.