Section 816A(a) in Police Regulations, Bengal , 1943
(a)A subordinate officer in superior service who wants leave or extension of leave on medical certificate shall submit an application to the Superintendent through his immediate superior. The application shall be accompanied by a certificate given by a registered medical practitioner or by a request for the issue of a requisition for examination by a medical officer in the service of the Crown. Police officers under treatment in a police hospital, who require leave on discharge from the hospital, shall be granted such leave as may be recommended by the Civil Surgeon or the medical officer-in-charge.