The principal of, and interest on, the bonds and any premiums upon the redemption of any thereof are not a debt of the local agency, nor a legal or equitable pledge, charge, lien, or encumbrance, upon any of its property, or upon any of its income, receipts, or revenues except the revenues that have been pledged to their payment.
Source:
Section 50666.9, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=GOV§ionNum=50666.9..