Liquidity is an important characteristic of banks. By their very nature, banks transform the term of their liabilities to have different maturities on the asset side of the balance sheet. At the same time, banks must be able to meet their commitments such as deposits at the point at which they become due. Thus, liquidity management lies at the heart of confidence in the banking operation. Customers place their deposits with a bank, confident they can withdraw the deposit when they wish. If the ability of the bank to pay out on demand is questioned, all its business may be lost overnight. The importance of liquidity transcends the individual institution, since a liquidity shortfall at a single institution may invoke systemic repercussion causing harm to the whole financial stability of a country. Therefore it is important for banks to have adequate liquidity potential when it can obtain sufficient funds promptly and at a reasonable cost. For Islamic banks, liquidity risk is a significant risk owing to the limited availability of Shariah-compatible money market instruments and Lender-Of-Last-Resort (LOLR) facilities. Hence, the recent introduction of commodity murabahah instrument based on tawarruq concept by Central Bank of Malaysia is deemed as an innovative approach to liquidity management. It certainly adds to the list of instruments for Islamic banks to manage their liquidity more effectively and efficiently. This paper reviews the structure and mechanism of commodity murabahah particularly for liquidity management purpose. As will be evident in this paper, this instrument has its own advantage which appeals to certain practitioners who were previously uncomfortable with `inah-based instruments (www.acrobatplanet.com).

Liquidity management lies at the heart of confidence in the banking operation. Customers place their deposits with a bank, confident they can withdraw the deposit when they wish. If the ability of the bank to pay out on demand is questioned, all its business may be lost overnight. In general terms, liquidity refers broadly to the ability to trade instruments quickly at prices that are reasonable in light of the underlying demand/supply conditions through the depth, breadth and resilience of the market at the lowest possible execution cost (Pervez, 2000). A perfectly liquid asset is defined as one whose full present value can be realized, i.e. turned into purchasing power over goods and services, immediately (Tobin, 1987). Cash is perfectly liquid, and so for practical purposes are demand deposits, and other deposits transferable to third parties by cheque or wire, and investments in short term liquid government securities (Abdul-Rahman, 1999). The importance of liquidity transcends the individual institution, since a liquidity shortfall at a single institution may invoke systemic repercussion causing harm to the whole financial stability of a country. Therefore it is important for banks to have adequate liquidity potential when it can obtain sufficient funds promptly and at a reasonable cost (Heffernan, 1996).

The concern over liquidity management is also relevant to Islamic bank that holds illiquid assets while its liabilities are liquid, and holds assets unpredictable in value while guaranteeing the value of its liabilities. Thus, since Islamic banks follow the same structure and characteristics of a commercial banks’ balance sheet, they are not immune from liquidity risk. The potential mismatch between deposits and investment financing exposes Islamic banks to liquidity problems. On the other hand, if the banks maintain too much liquidity to avoid getting into the liquidity problems may in turn hurt its profitability, therefore creating a right balance between the two objectives of safety (www.acrobatplanet.com).