If the auditor approves the action taken upon the claim, he shall endorse on the claim “approved” and attest the endorsement with his signature. He shall then issue and tender to the claimant his warrant for the amount allowed. Where the board has required the claimant to accept the amount allowed in settlement of the entire claim, the warrant shall not be delivered to the claimant until there has been delivered to the auditor a duly executed release or other instrument evidencing acceptance of the amount tendered in settlement of the entire claim.