Under the English common law, contractual obligations were deemed sacrosanct, so failure to honour a contract could lead to an order for specific performance or internment in a debtor's prison. In 1863, this harsh rule was softened by the case of "Taylor v Caldwell" which introduced the doctrine of frustration of contract, which provided that "where a contract becomes impossible to perform and neither party is at fault, both parties may be excused their obligations". In this case, a music hall was burned down by act of God before a contract of hire could be fulfilled, and the court deemed the contract frustrated.