Restraint on Alienation

Definition of restraint on alienation from thefreedictionary.com with examples n. an attempt in a deed or will to prevent the sale or other transfer of real property either forever or for an extremely long period of time. Such a restraint on the freedom to transfer property is generally unlawful and therefore, void or voidable (can be made void if an owner objects), since a present owner should not be able to tie the hands of future generations to deal with their property. This ban on a restraint on alienation (transfer) is called "the rule against perpetuities."