Tex. Educ. Code § 73.406

That portion of any revenues related to the provision of patient services through the operation of the Harris County Psychiatric Center facilities that are leased or subleased by and to The University of Texas System shall be accounted for and expended in accordance with the rules, regulations, and bylaws of The University of Texas System and in such manner that such revenues will reduce appropriated and funded requirements by both the state and county or the Harris Center for Mental Health and IDD on a prorated basis, all as may be provided for in a lease and operating agreement or sublease and operating agreement.