1112. The release of an obligation may be made either expressly or tacitly by persons legally capable of alienating.
It is made tacitly unless there is proof of a contrary intention, when the creditor voluntarily surrenders to his or her debtor what would be primary evidence of the obligation.
1113. The surrender of a pledge does not create a presumption of the release of the debt.
1114. The surrender to one of joint and several debtors of what would be primary evidence of an obligation, is available in favour of his or her co-debtors.
1115. An express release granted in favour of one of joint and several debtors without fulfilment of the obligation does not discharge the others; but the creditor must deduct from the debt the share of him or her whom he or she has released.
1116. An express release granted to the principal debtor discharges his or her sureties.
If granted to the surety, it does not discharge the principal debtor.
If granted to one of several sureties it does not discharge the others, except in cases in which the latter would have a recourse upon the one released and to the extent of such recourse.