section 48 · 48 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 a man has a debt upon him and a thunderstorm ravaged his field or carried away the produce, or the corn has not grown through lack of water, in that year he shall not return corn to the creditor, he shall alter his tablet and he shall not give interest for that year.