The International Development Association (Tenth Replenishment) Order 1993
The Overseas Development and Co-operation Act 1980, section 6(2), provides that if the Government of the United Kingdom becomes bound by arrangements for the making of additional payments to the International Development Association, the Secretary of State may, with the approval of the Treasury, provide by order for the payment out of money provided by Parliament of any sums required by him for any of the purposes specified in that subsection.