Indian Contract Act, 1872
51. Promisor not bound to perform, unless
reciprocal promisee ready and willing to perform
When a contract consists of reciprocal promises to be
simultaneously performed, no promisor need perform his promise unless the
promisee is ready and willing to perform his reciprocal promise.
Illustrations
(a) A and B contract that A shall deliver goods to B to be paid
for by B on delivery. A need not deliver the goods, unless B is ready and
willing to pay for the goods on delivery.
B need not pay for the goods, unless A is ready and willing to
deliver them on payment.
(b) A and B contract that A shall deliver goods to B at a price
to be paid by installments, the first installment to be paid on delivery.
A need not deliver, unless B is ready and willing to pay the
first installment on delivery.
B need not pay the first installment, unless A is ready and
willing to deliver the goods on payment of the first installment.