This document discusses the concept of investment pools in Islamic banking at Summit Bank. It explains that remunerative customer deposits and financing assets are allocated to different investment pools based on their source of funds, including a general pool, treasury pool, equity pool, and special mudarabah pools. Rules for pool management include capping the bank's mudarib share at 50% of profits and maintaining at least 20% saleable assets. Weightages are used to distribute profits among depositors with different amounts and maturities. Special rate deposits can be accepted through special pools that invest in higher risk/return sectors.