Sale of Goods Act, 1930
6. Existing or future goods
(1) The goods which form the subject of a contract of sale may
be either existing goods, owned or possessed by the seller, or future goods.
(2) There may be a contract for the sale of goods the
acquisition of which by the seller depends upon a contingency which may or may
not happen.
(3) Where by a contract of sale the seller purports to effect a
present sale of future goods, the contract operates as an agreement to sell the
goods.