Option of Condition (Khiyar al-Shart)

**Definition:** When the contracting parties, or one of them, stipulates the option for a known period to execute or annul the contract. **How It Works:** - If the specified period from the beginning of the contract ends without annulment, the sale becomes binding **Example:** A man buys a car from another and says: "I have the option for a full month." - If he withdraws from the purchase within the month, he may do so - Otherwise, the purchase becomes binding upon him when the month ends