وَءَاتُوا۟ ٱلنِّسَآءَ صَدُقَٰتِهِنَّ نِحْلَةًۭ ۚ فَإِن طِبْنَ لَكُمْ عَن شَىْءٍۢ مِّنْهُ نَفْسًۭا فَكُلُوهُ هَنِيٓـًۭٔا مَّرِيٓـًۭٔا ﴿٤﴾
你们应当把妇女的聘仪，当做一份赠品，交给她们。如果她们心甘愿情地把一部分聘仪让给你们，那末，你们可以乐意地加以接受和享用。
Halal Family & relations
Is the mahr (dowry) required in marriage?
Short answer
Yes. The Quran commands giving women their dowries as a gift (4:4). It belongs to the wife, and there is no fixed amount. It can be small or large by agreement, and the best is what is easy and sincere.
Evidence
Quran
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Questions about halal and haram
Is the mahr (dowry) required in marriage?
Yes. The Quran commands giving women their dowries as a gift (4:4). It belongs to the wife, and there is no fixed amount. It can be small or large by agreement, and the best is what is easy and sincere.