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.
Concedei os dotes que pertencem às mulheres e, se for da vontade delas conceder-vos algo, desfrutai-o com bomproveito.
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.