When the plea that a legislative provision infringes the rights and freedoms guaranteed by the Constitution is raised by a detainee, in support of a request that may be made by handing it to the head of the prison, the separate written statement of reasons may also be handed to the head of the prison. This document is stamped by the prison governor, indicating the day on which it was handed in, and the original or a copy is sent without delay to the registry of the court hearing the case.