section 104 · 70 of 248
The Code of Hammurabi
English, translated by C. H. W. Johns — Johns, The Oldest Code of Laws in the World, Edinburgh, 1903
If the merchant has given to the agent corn, wool, oil, or any sort of goods, to traffic with, the agent shall write down the price and hand over to the merchant; the agent shall take a sealed memorandum of the price which he shall give to the merchant.