Indian Contract Act, 1872
129. Continuing guarantee
A guarantee which extends to a series of transaction, is called, a "continuing guarantee".
(a) A, in consideration that B will employ C in collecting the rents of B's zamindari, promises B to be responsible, to the amount of 5,000 rupees, for the due collection and payment by C of those rent. This is a continuing guarantee.
(b) A guarantees payment to B, a tea-dealer, to the amount of £ 100, for any tea he may from time to time supply to C. B supplies C with tea to above the value of £ 100, and C pays B for it. Afterwards, B supplies C with tea to the value of £ 200. C fails to pay. The guarantee given by A was a continuing guarantee, and he is accordingly liable to B to the extent of £ 100.
(c) A guarantees payment to B of the price of five sacks of flour to be delivered by B to C and to be paid for in a month. B delivers five sacks to C. C pays for them. Afterwards B delivers four sacks to C, which C does not pay for. The guarantee given by A was not a continuing guarantee, and accordingly he is not liable for the price of the four sacks.