وكذلك لفظ التمليك والبيع، ولا ينعكس حتى لا ينعقد البيع والهبة بلفظ النكاح
The extension to transfer and sale wording does not reverse: speaking in the language of marriage does not itself constitute a sale or a gift.
This applies the rule of borrowing the original expression for a derivative case. The original terminology of transfer may be accepted for marriage in the specified setting, but marriage terminology is not thereby sufficient to dispose of property through sale or gift.
Saying “I marry you” does not sell a book or gift a house. Direction matters.