I say, and with God's help: It is necessary to have the contract in court in an official manner in order to preserve rights, and the external contract is sinful for its role in wasting rights in countries that do not impose obstacles to contracts in court. Therefore, there is no excuse for the external contract, and the problems that arise from it are very numerous, which do not match its benefits. It is necessary to have it documented in the state, and God knows best.