《资治通鉴·唐纪·唐纪五十四》
李绛说：我私下里观察河南、河北骄横强暴的藩镇，都分出一部分兵力，隶属给各个将领，不让兵力专门由一人掌握，这是担心掌握兵权的将领权力与职任过重，便会趁机图谋自己的原故。
绛曰： 臣窃观两河蕃镇之跋扈者，皆分兵以隶诸将，不使专在一人，恐其权任太重，乘间而谋己故也。
Li Jiang said, "I have observed the arrogant and violent vassal towns in Henan and Hebei. They all separate their troops and assign them to various generals instead of letting a single man control their troops. This is because they are wary that generals with too much power would conspire their own plots.