From the creature of Allah Ali bin Abi Taalib (a) to the governors and the collectors of those provinces through which his armies are to pass.
After glorifying Allah and praising the Holy Prophet (s), be it known to you that I am sending some detachments of army which will, Allah willing shortly pass through your cities and provinces. I have issued them the orders which Allah wants them to obey: They should not molest anybody or harm any person or anything. I want to inform you and your subjects that if the soldiers misbehave themselves or if they take anything, their action is against my orders.

Except for the condition that they accidentally fall short of the ration and can find no way to appease their appetite, if they take anything from anybody they are to be punished. You may punish them. But take care and do not allow the foolish and insolent people of your place to quarrel with them or insult them or interfere with or obstruct the things that I have permitted them. I shall also be following the army. You may report to me of any excess or violence committed within your jurisdiction, of any awkward and difficult position in which you find yourself, or of any harshness or atrocity which was perpetrated in your province and which you cannot redeem without the help of Allah and your Imam. If you report all such affairs to me, Allah willing I shall attend to them and settle them to the satisfaction of all.