Diminishing Musharakah is an Islamic financing structure where the bank and customer jointly own an asset, with the customer gradually purchasing the bank's shares over time until becoming the sole owner. It is commonly used to finance fixed assets like homes, cars, and machinery. The bank and customer establish a joint ownership agreement and partnership, with the customer leasing the bank's shares and making periodic purchase payments until full ownership is transferred. This gradual transfer of ownership from bank to customer makes Diminishing Musharakah sharia compliant.