• In Ijara Mawsoofa bi al Dhimma (forward Ijara or literally known as lease described with responsibility) which is also transliterated Ijara Mawsufa bi al Thimma, the service or benefit being leased is well-defined, but the particular unit providing that service or benefit is not identified. Thus, if a unit providing the service or benefit is destroyed, the contract is not void.
• In contemporary Islamic finance, Ijara Mawsoofa bi al Dhimma is the leasing of something (such as a home, office, or factory) not yet produced or constructed. This means the Ijara Mawsoofa bi al Dhimma contract is combined with Istisna contract for construction of whatever it is that will provide the service or benefit. The financer finances its making, while the party begins leasing the asset after "taking delivery" of it.
• While forward sales normally do not comply with sharia, it is allowed using Ijara provided rent/lease payments do not begin until after the customer has taken delivery.
• Also required by sharia is that the asset be clearly specified, its rental rate be clearly set (although the rate may float based on the agreement of both parties).