👉 In Islam, the term "heyrat" refers to a specific form of marriage that is considered illegal in traditional Muslim society. The main difference between the legal and illegal marriages is the nature of the union, which is often based on religious or cultural factors rather than romantic attraction. The legal marriage in Islam is defined by the Quran as a union between two people who are related through blood or marriage and have agreed to marry each other for a specific purpose. The Quran states that marriage should be voluntary