《宋书·列传·卷七十四》
当年秋天，太宗再叫沈攸之进围彭城，沈攸之认为清水和泗水已经干涸了，军粮的运输跟不上，坚持认为这样不适宜。
其年秋，太宗复令攸之进围彭城。攸之以清泗既干，粮运不继，固执以为非宜，往反者七。
In the autumn of that year, Taizong asked Shen Youzhi to besiege Pengcheng again. Shen Youzhi believed that the clear water and the Si River had dried up, and the transportation of military supplies could not keep up, and insisted that it was not suitable to do so.