应该用entailed
entail sth ( on sb) 限定.继承人
这些财产若非限定继承的话,他早就卖掉了（ 这是牛津高阶英汉双解词典上面的原句）
He would have sold the property long ago 是主句
had it not been entailed.是从句=if it had not been entailed