Valid Sale, Deferred-Payment Sale (بيع مؤجل) and Cost-Plus Rules

Read-only question overview. Answers and scoring remain inside authenticated learner attempts.

• An ordinary sale may be made effective only if an uncertain future event happens.
• If Rs. 100 cash or Rs. 110 on six months' credit are quoted, what must happen?
• Which condition is more likely valid as part of sale?
• A deferred-payment due date may depend on an uncertain event with unknown timing.
• Once a deferred sale price is fixed, it may be increased merely because the buyer is late.
• Which cost may be included in Murabahah cost?
• If exact individual cost is unknown, which sale is used instead?