9. In the third place, those who desire to keep themselves free and untouched by the contamination of usury and to give their money to another in such a manner that they may receive only legitimate gain should be admonished to make a contract beforehand. In the contract they should explain the conditions and what gain they expect from their money. This will not only greatly help to avoid concern and anxiety, but will also confirm the contract in the realm of public business. This approach also closes the door on controversies-which have arisen more than once-since it clarifies whether the money, which has been loaned without apparent interest, may actually contain concealed usury.