"In reporting commands and requests, the Indirect Speech is introduced by some verb expressing command or request and the imperative is changed into the infinitive."

In indirect speech commands, requests or advice are usually expressed by using a verb of command, request or advice + object + infinitive.
The verbs like: advise, ask, beg, command, encourage, entreat, forbid, implore, invite, order, recommend, remind, request, tell, urge, warn can be used to from indirect statements.