《资治通鉴·唐纪·唐纪八十一》
此前，攻城各将领望见安仁义就骂他，只有李德诚不这样，到这时，安仁义召李德诚登楼，对他说： 你有礼貌，我现在把功劳给你。 
先是，攻城诸将见仁义辄骂之，惟李德诚不然，至是仁义召德诚登楼，谓曰： 汝有礼，吾今以为汝功。 
Before this, all the generals who attacked the city scolded An Renyi when they saw him, except for Li Decheng. At this time, An Renyi called Li Decheng upstairs and said to him, "You are polite. Now I give you my merits."