The document describes the concept of Diminishing Musharakah, an Islamic financing structure where a bank and customer jointly own an asset. The bank owns most of the asset initially. The customer uses the asset and pays rent to the bank for its share. Over time, the customer purchases shares from the bank until it owns the entire asset. The key components are joint ownership between the bank and customer, the customer leasing the bank's share and paying rent, and gradually redeeming the bank's ownership share through purchase transactions. Diminishing Musharakah is commonly used for house, car, and equipment financing in accordance with Islamic principles of shared ownership.