Canon 210 - §1. An eparchial bishop who has completed his seventy-fifth year of age or who, due to ill health or to another serious reason, has become less able to fulfill his office, is requested to present his resignation from office.
§2. This resignation from office by the eparchial bishop is to be submitted to the patriarch if it is the case of an eparchial bishop exercising authority inside the territorial boundaries of a patriarchal Church; in other cases, it is submitted to the Roman Pontiff; further, if the bishop belongs to a patriarchal Church, the patriarch is to be notified as soon as possible.
§3. To accept this resignation the patriarch needs the consent of the permanent synod, unless a request for resignation was made previously by the synod of bishops of the patriarchal Church.