Is it forbidden for a wife to dispose of part of her gold by selling it to fund a specific study, and is she required to inform her husband of this, and is she obliged to return it to him after selling it?

A woman is permitted to dispose of her private property, whether gold or other assets, by selling it or otherwise, without her husband's permission. However, it is advisable to document any transaction involving gold listed in the dowry agreement, either in writing or by calling witnesses. It is also preferable not to dispose of money without the husband's knowledge, in order to preserve affection.