Res Gestae

And he obtained it, with pardon for all that was past, on these terms: that he should deliver up his Roman captives and supply the soldiers with food as often as it should be needed, receiving security[*](That is, he was to receive receipts from those in charge of the supplies, and show them to Julian.) for what he brought in just like any ordinary contractor. And if he did not present it on time, he was to know that the same amount would again be demanded of him.