In early modern Europe, there was significant demand for products from Mughal India, particularly cotton textiles, as well as goods such as spices, peppers, indigo, silks, and saltpeter (for use in munitions).[71] European fashion, for example, became increasingly dependent on Mughal Indian textiles and silks. From the late 17th century to the early 18th century, Mughal India accounted for 95% of British imports from Asia, and the Bengal Subah province alone accounted for 40% of Dutch imports from Asia.[81] In contrast, there was very little demand for European goods in Mughal India, which was largely self-sufficient.[71] Indian goods, especially those from Bengal, were also exported in large quantities to other Asian markets, such as Indonesia and Japan.[82] At the time, Mughal Bengal was the most important center of cotton textile production[83] and shipbuilding.[84]
For a person working for a wage, their source of income is their job, or their labor (aka their time that they sell to someone). But you can own a house, and rent it out, and when your renters pay you renter every month, the source of that income check is your rental property, or your house. It would just be called rental income. If you have money in the bank in an account that pays interest, those interest payments are another source of income. We can say the source is interest payments, or we can identify the asset that is generating rent, and say your money in the bank that is generating “rent” (aka interest) is your source of income.