Is the husband obligated to compensate his wife for her golden dowry if she sold it willingly to purchase household necessities and pay the rent?

Your voluntary act of selling your gold and spending it on the house is a righteous and honorable deed, and we ask Allah to reward you for it. Your husband is not obligated to compensate you for these expenses, as you disposed of your Mahr (dowry) by your own choice. However, he should reciprocate your kindness with kindness and reward you generously according to his ability.