《宋史·列传·卷一百七十六》
赵范说： 金兵一定是又想在晚上出战以侥幸取胜。 于是预先准备大鼓，命令军中听见击鼓声开始出击，如果敌方没有到五十步内就行动的人定斩不赦。
范曰： 金人必复谋夜战以幸胜，乃预备大鼓，令军中闻叠鼓声始动，若彼未至五十步内而辄动者斩。
Zhao Fan said: "The Jin soldiers must want to fight at night again to win by luck." So he prepared the big drum in advance and ordered the army to start attacking when he heard the sound of the drum. If the enemy did not reach within fifty steps, the people who acted would be pardoned.