《南史·列传·卷五十八》
在此以前右军司马胡景略到合肥，但久攻不下。韦睿到后考察山川地势，说： 我听说 汾水可以灌平阳 ，就和这一样。 
先是右军司马胡景略至合肥,久未能下,睿案行山川，曰： 吾闻 汾水可以灌平阳 ，即此是也。 
Before this, the right-wing Sima Hu Jinglue had arrived at Hefei, but had failed to take it after a long siege. After his arrival, Wei Rui surveyed the mountains and rivers and said: "I heard 'Fen Shui can be used to inundate Ping Yang', it is like this." 