What is hebes corpus?

A writ of habeas corpus (Latin: "you may have the body") is a writ (court order) that requires a person under arrest to be brought before a judge or into court. The principle of habeas corpus ensures that a prisoner can be released from unlawful detention-that is, detention lacking sufficient cause or evidence. The remedy can be sought by the prisoner or by another coming to the prisoner's aid. This right originated in the English legal system, and is now available in many nations.