A foray (Polish: zajazd, Ukrainian: наїзд) was a traditional method of law enforcement in Grand Duchy of Lithuania and Polish–Lithuanian Commonwealth. In view of the weakness of the executive in the Polish-Lithuanian Commonwealth, it was used by members of the szlachta to defend their rights. Since the mid-17th century, forays were increasingly done without a legal sanction simply when a member of szlachta would gather his supporters and raid an estate of his opponent. They would become a common occurrence during the period of noble's anarchy in the Commonwealth.