(2)If a government servant has been required to forego 3 vacation or a portion of it under the orders of a higher authority, a certificate in the following form should be sent immediately after the close of the vacation to the Accountant General. In the case of a gazetted government servant to whom the exception under Subsidiary Rule 157-A applies the certificate should be sent to the Accountant General at the time the government servant concerned applies for leave along with his leave application and not immediately after the close of the vacation. In the case of gazetted government servants the certificate should be sent to the Accountant General by the government servant himself through the higher authority under whose order he was required to forego the whole or a portion of the vacation, and in the case of non-gazetted government servant the certificate duly countersigned by the higher authority it should be appended to his leave account and a note to that effect made in his service-book:I certify that I was detained on duty from ................ to ................ during the vacation of the (school, College, etc. ................) of the year ................ under the order of (name of higher authority) ................ communicated in his letter no. ................, dated .................Signature of the government servant.Designation.Countersigned.Signature of the higher authority.Designation.