Section 646. If no time is fixed, the property shall be returned after the borrower has made the use of it for the purpose appearing from the contract. The lender may claim the return of the property earlier, if so much time has elapsed that the borrower might have made the use of it.
If no time is fixed and no purpose appears from the contract, the lender may claim the return at any time.
Section 647. Expenses for ordinary maintenance of the property lent must be borne by the borrower.