"Most Muslims today either are not aware, or do not like to emphasize, the theoretical presumptions embedded in the Islamic jurisprudence of marriage law because they are quite far from contemporary sensibilities. Established Islamic marriage contract law uses the contract of sale as its basic conceptual framework—a model which leads to some uncomfortable conclusions about what is being sold and the role of women’s agency in that sale."
January 1, 1970
https://en.wikiquote.org/wiki/Islamic_views_on_concubinage