《旧唐书·本纪·卷十七》
诏令说 ：户部侍郎两名，今后先授予职务较高者，应让他兼本司钱、粮；如果户部侍郎是加平章事者，应兼管盐铁、度支事，如果是任中丞、学士者不在此限。 
诏曰： 户部侍郎两员，今后先授上者，宜令判本司钱谷；如带平章事，判盐铁度支，兼中丞学士不在此限。 
The edict stated: The two Assistant Ministers of the Ministry of Revenue will henceforth be awarded the higher positions first, and should let them concurrently manage the money and grain of this office; if the Assistant Minister of the Ministry of Revenue is the Jia Pingzhangshi, he should also concurrently manage the Salt and Iron, and Duzhi affairs, if he is the Zhongcheng or Scholar, he is not limited to this.