《史记·七十列传·司马相如列传》
无是公称说上林苑的广大，山谷、水泉和万物，以及子虚称说云梦泽所有之物甚多，奢侈靡，言过其实，而且也不是礼仪所崇尚的，所以删取其中的要点，归之于正道，加以评论。
无是公言天子上林广大，山谷水泉万物，乃子虚言楚云梦所有甚众，侈靡过其实，且非义理所尚，故删取其要，归正道而论之。
Wu Shigong said that the extravagance of Shanglin Park, the mountains and valleys, the springs and everything, as well as the extravagance of Zi Xu's rhetoric about Yunmeng Marsh, were exaggerated and not what etiquette advocates. So he deleted the main points and returned them to the right way to comment on them.