Delaware constitution
Article VIII
Section 3

No money shall be borrowed or debt created by or on behalf of the State but pursuant to an Act of the General Assembly, passed with the concurrence of three-fourths of all the members elected to each House, except to supply casual deficiencies of revenue, repel invasion, suppress insurrection, defend the State in war, or pay existing debts; and any law authorizing the borrowing of money by or on behalf of the State shall specify the purpose for which the money is to be borrowed, and the money so borrowed shall be used exclusively for such purpose; but should the money so borrowed or any part thereof be left after the abandonment of such purpose or the accomplishment thereof, such money, or the surplus thereof, may be disposed of according to law.