《资治通鉴·后晋纪·后晋纪六》
钱弘佐建议铸铁钱以增加将士们的俸禄赏赐，他的弟弟牙内都虞候钱弘亿劝谏道： 铸铁钱有八条害处：新铁钱一发行，旧铜钱都流入邻国，这是第一条；铁钱可在我国使用却不可在他国使用，商人不使用，百货也就不能流通，是第二条；采铜被严格禁止，百姓还有偷偷铸造的，况且每家都有铁锅，地里有铧犁，私铸犯法的必然多，是第三条；闽人铸造铁钱而灭亡，这不值得效法，是第四条；国家财力庆幸很充足，而铸铁钱却是自己显示国库空虚，这是第五条；赐予俸禄本有常数，而无故增加它来诱发贪得无厌之心，是第六条；一旦钱法改变酿成弊端，不能立即恢复，是第七条； 钱 是国姓，改动不吉祥，是第八条。 
弘佐议铸铁钱以益将士禄赐，其弟牙内都虞候弘亿谏曰： 铸铁钱有八害：新钱既行，旧钱皆流入邻国，一也；可用于吾国而不可用于它国，则商贾不行，百货不通，二也；铜禁至严，民犹盗铸，况家有铛釜，野有铧犁，犯法必多，三也；闽人铸铁钱而乱亡，不足为法，四也；国用幸丰而自示空乏，五也；禄赐有常而无故益之，以启无厌之心，六也；法变而敝，不可遽复，七也； 钱 者国姓，易之不祥，八也。 
Qian Hongzuo suggested casting iron coins to increase the salaries and rewards of the soldiers, and his younger brother, Qian Hongyi, the internal commander of the imperial guards, advised him: Casting iron coins has eight disadvantages: As soon as new iron coins are issued, all old copper coins will flow into neighboring countries, this is the first; iron coins can be used in our country but not in other countries, merchants will not use them, and goods will not be able to circulate, the second; the mining of copper is strictly prohibited, the people may still cast it secretly, and moreover, every family has iron pots and plows in the field, and there will be many who will illegally cast coins, this is the third; The people of Min cast iron coins and were destroyed, this is not worth imitating, this is the fourth; the country's finances are fortunately very ample, and casting iron coins is a self-evident sign that the treasury is empty, this is the fifth; there is a constant number for granting salaries, and to increase them for no reason will induce insatiable greed, this is the sixth; once the money law is changed and problems are created, it will not be possible to restore it immediately, this is the seventh; Money is the national surname, and it is unlucky to change it, this is the eighth.