What role of RBI is known as ‘lender of last resort’?

When the commercial banks have used all their resources to meet their financial needs, they resort to the central bank of the country in times of liquidity crisis. As a lender of last resort, the central bank gives them financial accommodation. This is done either by redeeming their eligible securities or bills of exchange. or by providing loans against their securities. This saves the bank from any possible case of failure and avoids a breakdown.