《宋史·列传·卷二百三十五》
不久，彭义斌没等到朝廷的命令，就去北方开拓土地，同大元兵在内黄的五马山交战，大元兵劝他投降，彭义斌厉声说： 我是大宋朝的臣民，况且河北、山东都是大宋朝的百姓，做别人的臣属，义不容许！ 
未几，义斌俟命不至，拓地而北，与大元兵战于内黄之五马山。大元兵说之降，义斌厉声曰： 我大宋臣，且河北、山东皆宋民，义岂为他臣属耶！ 遂死之。
Before long, Peng Yibin didn't wait for the imperial court's orders, but went north to open up land and fought against the Great Yuan army at Wumashan in Neihhuang; the Great Yuan army persuaded him to surrender, but Peng Yibin sternly said: I'm a subject of the Great Song, moreover Hebei, Shandong are all people of the Great Song, to be a subject of others, it's against morality!