63. Every promisee may dispense with or remit, wholly or in part, the performance of the promise made to him or may extend the time for such performance, or may accept instead of it any satisfaction which he thinks fit.Illustrations (a) A promises to paint a picture for B. B afterwards forbids him to do so. A is no longer bound to perform the promise. (b) A owes B 5,000 Taka. A pays to B, and B accepts, in satisfaction of the whole debt, 2,000 Taka paid at the time and place at which the 5,000 Taka were payable. The whole debt is discharged. (c) A owes B 5,000 Taka. C pays to B 1,000 Taka, and B accepts them, in satisfaction of his claim on A. This payment is a discharge of the whole claim. (d) A owes B, under a contract, a sum of money, the amount of which has not been ascertained. A, without ascertaining the amount, gives to B, and B, in satisfaction thereof, accepts, the sum of 2,000 Taka. This is a discharge of the whole debt, whatever may be its amount. (e) A owes B 2,000 Taka and is also indebted to other creditors. A makes an arrangement with his creditors, including B, to pay them a composition of eight annas in the Taka upon their respective demands. Payment to be of 1,000 Taka is a discharge of B's demand.