Background and Aim: The financial relations of a couple are determined as dowry by agreement and will of the two families, which is in full support of the law and can be collected by special legal tools and levers and has value and tax independently. The couple agrees with the parties. They can change it.
Materials and Methods: This is a theoretical research. The research method is descriptive-analytical. The method of collecting information is library. It has been done by referring to documents, books and articles.
Ethical considerations: In all stages of writing the present study, while respecting the originality of the texts, honesty and trustworthiness have been observed.
Results: After marriage, a couple can increase or decrease the dowry by compromise or seal another's property; Of course, different opinions have been expressed in this regard, some have said: "Sharia dowry is the same as it was during the contract and increasing the dowry after the contract is not legally valid." Increasing or decreasing the amount of dowry by the husband or wife during the marriage may be in the form of a condition of action or a condition of result.The wife looks at it from an economic point of view.
Conclusion: Therefore, the dowry is determined by the will of the couple, who can either spend part of it, or forgive the whole of it, reduce it or increase it.