A majority of the members of the Board of Trustees shall constitute a quorum and have the power to transact business, provided no money belonging to the funds of the Police Pension and Retirement System shall be disbursed for any purpose without a vote of the majority of all the members of the Board of Trustees, which vote shall be taken by yeas and nays, and the vote of each member so voting entered upon the proceedings of the Board.
(`90 Code, § 1-39)