Tex. R. Civ. P. 683
Every order granting an injunction and every restraining order shall set forth the reasons for its issuance; shall be specific in terms; shall describe in reasonable detail and not by reference to the complaint or other document, the act or acts sought to be restrained; and is binding only upon the parties to the action, their officers, agents, servants, employees, and attorneys, and upon those persons in active concert or participation with them who receive actual notice of the order by personal service or otherwise.
Every order granting a temporary injunction shall include an order setting the cause for trial on the merits with respect to the ultimate relief sought. The appeal of a temporary injunction shall constitute no cause for delay of the trial.
Tex. R. Civ. P. 683