(a) The department may request, contract for, receive, and spend for its purposes an appropriation, grant, allocation, subsidy, rent supplement, guarantee, aid, contribution, gift, service, labor, or material from this state, the federal government, or another public or private source.
(b) The funds and revenues of the housing finance division shall be kept separate from the funds and revenues of the other divisions, and the other divisions may use funds and revenues of the housing finance division only to administer housing-related programs.
(c) Except for legislative appropriations, funds necessary for the operation of the housing finance division, and trustee-held funds of the department under a multifamily bond indenture, all funds and revenue received by the housing finance division are to be kept outside the state treasury.
(d) Legislative appropriations to the housing finance division and the operating funds of the division shall be kept in the state treasury. Trustee-held funds of the department under a multifamily bond indenture are held by the trustee as provided by the indenture.