A monetary policy tool that allows a window for banks to borrow from the RBI in an emergency situation when inter-bank liquidity finishes is called- 

Liquidity adjustments facility (LAF) -Banks borrow money through repurchase agreements for adjusting the day to day mismatches in liquidity Marginal standing facility (MSF): It’s a window for banks to borrow from the RBI in an emergency situation when inter-bank liquidity finishes. Market Stabilization scheme (MSS): Securities that are issued for providing a stock of securities to the RBI to intervene in the market for managing liquidity. Repo rate: The rate at which the RBI lends money to banks in the event of any shortfall of funds with banks. Reverse Repo Rate: The rate at which the RBI borrows money from commercial banks. This is used to reduce the money supply in market