Is it permissible for a husband to prevent his wife from donating clothes she no longer needs, which he bought for her with his own money, and is the wife sinful if she donates money her husband gave her without his knowledge?

A husband does not have the right to prevent his wife from disposing of her clothes that she no longer needs, whether they are her property or from the husband's wealth. She may dispose of them by selling or giving them as charity, unless doing so would cause her harm. It is permissible for a wife to give in charity from the money her husband gives her, because she owns it through the gift, and she has the right to dispose of her own wealth without needing her husband's permission.