Hundi

A hundi or hundee is a financial instrument that was developed in Medieval India for use in trade and credit transactions. Hundis are used as a form of remittance instrument to transfer money from place to place, as a form of credit instrument or IOU to borrow money and as a bill of exchange in trade transactions. The Reserve Bank of India describes the hundi as "an unconditional order in writing made by a person directing another to pay a certain sum of money to a person named in the order."