The validity of bonds which have been sold and the proceeds thereof received by the municipality shall not be impaired by the failure to use the proceeds for the authorized purpose or the insufficiency of the proceeds to accomplish such purpose in whole or in part, but the use of all or part of the proceeds for another purpose may be submitted to and authorized by the voters in the same manner as would have been required if the bonds had originally been authorized for the new purpose; provided, that the proceeds of funding or refunding bonds shall never be used for any purpose other than the payment of outstanding indebtedness.
SDCL 9-26-24