13. No step in execution of a certificate shall be taken until the period of thirty days has elapsed since the date of the service of the notice required by section 7, or, when a petition has been duly filed under section 9, until such petition has been heard and determined:Provided that, if the Certificate-officer in whose office a certificate is filed is satisfied that the certificate-debtor is likely to conceal, remove or dispose of the whole or any part of such of his movable property as would be liable to attachment in execution of a decree of a Civil Court, and that the realization of the amount of the certificate would in consequence be delayed or obstructed, he may at any time direct, for reasons to be recorded in writing, an attachment of the whole or any part of such movable property:Provided further that if the certificate-debtor whose movable property has been so attached furnishes security to the satisfaction of the Certificate-officer, such attachment shall be cancelled from the date on which such security is accepted by the Certificate-officer.