Execution of certificate by subordinate officers.

A Collector in whose office a certificate is filed under section 4 or to whom a copy of the certificate is transmitted under section 5 may send it for execution to any Assistant Collector or Tehsildar subordinate to him, within whose jurisdiction the defaulter resides or owns property: Provided that no action under this section shall be taken until after the expiry of thirty days since the service of notice under section 6 or when a petition has been presented under section 8 until after its final determination.