Section 134 in The Indian Contract Act, 1872

Title: Discharge of surety by release or discharge of principal debtor.

Description: The surety is discharged by any contract between the creditor and the principal debtor, by which the principal debtor is released, or by any act or omission of the creditor, the legal consequence of which is the discharge of the principal debtor. Illustrations (a) A gives a guarantee to C for goods to be supplied by C to B. C supplies goods to B, and afterwards B becomes embarrassed and contracts with his creditors (including C) to assign to them his property in consideration of their releasing him from their demands. Here B is released from his debt by the contract with C, and A is discharged from his suretyship. (b) A contracts with B to grow a crop of indigo on A's land and to deliver it to B at a fixed rate, and C guarantees A's performance of this contract. B diverts a stream of water which is necessary for the irrigation of A's land and thereby prevents him from raising the indigo. C is no longer liable on his guarantee. (c) A contracts with B for a fixed price to build a house for B within a stipulated time, B supplying the necessary timber. C guarantees A's performance of the contract. B omits to supply the timber. C is discharged from his suretyship.

Title: Discharge of surety when creditor compounds with, gives time to, or agrees not to sue, principal debtor.

Description: A contract between the creditor and the principal debtor, by which the creditor makes a composition with, or promises to give time to, or not to sue, the principal debtor, discharges the surety, unless the surety assents to such contract.

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

Description: 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.

Title: Creditor's forbearance to sue does not discharge surety.

Description: Mere forbearance on the part of the creditor to sue the principal debtor or to enforce any other remedy against him does not, in the absence of any provision in the guarantee to the contrary, discharge the surety. Illustration B owes to C a debt guaranteed by A. The debt becomes payable. C does not sue B for a year after the debt has become payable. A is not discharged from his suretyship.

Title: Release of one co-surety does not discharge others.  

Description: Where there are co-sureties, a release by the creditor of one of them does not discharge the others; neither does it free the surety so released from his responsibility to the other sureties1. 1. See s. 44, supra.