Is it permissible for a woman to forgive her brothers a portion of her inheritance rights without her husband's permission, especially since her husband is displeased with that?

It is permissible for an heir to waive some of their right in favor of the deceased's other heirs. Similarly, a woman may dispose of her wealth without her husband's permission, according to the preponderant opinion. This is based on the generality of Allah's Almighty saying: "{And if you perceive from them sound judgment, then release to them their property}" (Quran 4:6). Also, because the Prophet, peace and blessings be upon him, commanded women to give charity and did not inquire whether they had husbands or not. Furthermore, a woman is competent to dispose of her property, and her husband has no right to her wealth.