《新五代史·列传·汉臣传第十八》
凤翔李永吉初到京师朝见，苏逢吉因李永吉是过去秦王李从暇的儿子，世代王侯之家，应常有奇异的财物，就派人告诉李永吉，答应给他一个州，而索求他祖上的玉带，李永吉以没有玉带作解释，苏逢吉于是派人买了一条玉带，价值几千缙，要求李永吉抵偿；前客省使王筠在晋末出使楚，到这时纔回来，苏逢吉猜想王筠得到楚王的厚重财物，派人索求，答应给他一个州，王筠快怏不乐，把口袋中装的一半财物献给他。
凤翔李永吉初朝京师，逢吉以永吉故秦王从严子，家世王侯，当有奇货，使人告永吉，许以一州，而求其先王玉带，永吉以无为解，逢吉乃使人市一玉带，直数千缗，责永吉偿之；前客省使王筠自晋末使楚，至是还，逢吉意筠得楚王重赂，遣人求之，许以一州，筠怏怏，以其橐装之半献之。
Li Yongji of Fengxiang first went to the capital for an audience with the emperor. Because Su Fengji knew that Li Yongji was the son of the former King Li Congxia of Qin, a family of nobles for generations, who must often have unusual wealth, he sent someone to tell Li Yongji to promise to give him a prefecture, while asking for his ancestral jade belt. Li Yongji explained that he did not have a jade belt. Su Fengji then sent someone to buy a jade belt, worth several thousand strings of coins, and asked Li Yongji to pay for it. The former envoy to the guest house Wang Yun had gone to Chu on a diplomatic mission in the late Jin Dynasty. By this time, he had just returned. Su Fengji guessed that Wang Yun had received great wealth from the King of Chu and sent someone to ask for it, promising to give him a prefecture. Wang Yun was very unhappy and reluctantly gave him half of the wealth in his saddle bags.