The Wealth of Nations by Part 2 Chapter 5 Page 31

Virginia had been purchased, not with British manufactures, but with the sugar and rum of Jamaica which had been purchased with those manufactures, he must wait for the returns of three.

If those two or three distinct foreign trades should happen to be carried on by two or three distinct merchants, of whom the second buys the goods imported by the first, and the third buys those imported by the second, in order to export them again, each merchant indeed will in this case receive the returns of his own capital more quickly; but the final returns of the whole capital employed in the trade will be just as slow as ever. Whether the whole capital employed in such a round-about trade belong to one merchant or to three can make no difference with regard to the country, though it may with regard to the particular merchants.