1. Bonds that pay interest are considered haram (forbidden) in Islamic law as interest is seen as usurious. 2. Sukuk are proposed as an alternative to bonds that are compliant with Islamic law. Sukuk represent partial ownership in an underlying asset rather than a debt obligation. 3. Key differences between sukuk and bonds are that sukuk pricing is based on the value of the underlying asset while bonds are based on the issuer's creditworthiness, and sukuk provide partial ownership of an asset while bonds represent a debt obligation.