在古代中国的历史长河中，鞌之战是一场具有深远影响的重要战役。这场战争不仅展示了当时军事策略的高超运用，也深刻反映了诸侯国之间的复杂关系和权力斗争。

原文如下：

昔者齐晋鞌之战，晋师三豕涉河，齐人以为袭己也，遂击之。及晋师至，则三豕乃马也，豕字误为马字耳。此故事虽小，然其教训深远，警示后人不可轻信传言，更需明辨是非。

翻译如下：

In ancient times, during the battle of An between the states of Qi and Jin, the Jin army mistakenly believed that three boars crossing the river were an ambush by the Qi forces. Consequently, the Qi soldiers attacked them. However, when the Jin troops arrived, they discovered that the so-called "boars" were actually horses, and the error was due to a misreading of the character for "boar" as "horse". Although this incident seems trivial, it carries significant lessons, reminding us not to hastily believe in rumors and always to carefully distinguish truth from falsehood.

以上便是关于鞌之战的原文与翻译。这段历史不仅记录了当时的战斗细节，还蕴含着丰富的哲理，值得我们深入思考与学习。