89. Surety not discharged when agreement made with third person to give time to principal debtor

Where a contract to give time to the principal debtor is made by the creditor with a third person, and not with the principal debtor, the surety is not discharged.

Illustration

C, the holder of an overdue bill of exchange drawn by A, as surety for B, and accepted by

B, contracts with M to give time to B. A is not discharged.