CCQ-1991 - Civil Code of Québec

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1689. A creditor who voluntarily surrenders the original title of an obligation to his debtor is presumed to grant him a release of the debt, unless the circumstances indicate that the debtor has paid the debt.
Similarly, a creditor who voluntarily surrenders the original title of an obligation to one of the solidary debtors is presumed to grant a release of the debt in favour of all the debtors.
1991, c. 64, a. 1689.