Definition: "Client40," a term in Islamic finance, refers to a borrower who promises repayment from two parties: a lender (the "client") and a third party known as the "servant." The client typically holds a high position in society or is wealthy enough to afford payment of interest. In Islam, this relationship can be complex; it involves both legal rights and moral obligations. Borrowing for repayment is often conditional upon a certain level of financial stability.