Is there an option for annulment (khiyar) in marriage contracts?

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The option of annulment, whether the option of the gathering (khiyar al-majlis) or the option of condition (khiyar al-shart), is not established in a marriage contract. This ruling is universally accepted, as necessity does not compel its allowance. Marriage contracts typically occur after deliberation, thought, and mutual inquiry regarding the disposition of both spouses. This differs significantly from sales conducted in markets, which often lack such prior consideration. Furthermore, marriage is not a pure exchange (mu'awada mahda); hence, knowledge of the subject matter through sight or description is not required, and it remains valid even without specifying the dower (mahr), and remains valid even if flawed.