وأما قوله وأنه أباح للرجل أن يتزوج بأربع زوجات ولم يبح للمرأة قط أن تتزوج بأكثر من زوج واحد فذلك من كمال حكمة الرب تعالى وإحسانه ورحمته بخلقه ورعاية مصالحهم ويتعالى سبحانه عن خلاف ذلك وينزّه شرعه أن يأتي بغير هذا ولو أبيح للمرأة أن تكون عند زوجين فأكثر لفسد العالم وضاعت الأنساب وقتل الأزواج بعضه م بعضاً وعظمت البلية واشتدت الفتنة
إعلام الموقعين عن رب العالمين لإبن قيم الجوزية فصل الحكمة في إباحة التعدد للرجل دون المرأة
Regarding someone who says that it is permitted for a man to marry four wives but it is not ever permitted for a woman to marry more than one husband; this is the perfection of the wisdom of the Lord Most High, his benevolence and mercy towards his creation, the guardianship of their conciliator. And He is exalted and high above any opposition to this, and has deemed it outside his law that anything other than this be established. If women were permitted to be with two or more husbands, the world would degenerate and lineages would be lost, husbands would kill each other, and calamity would become great and sedition intense.
Ibn Qayyim, I’lam Al-muwaqqi’in 'an Rabb Al-'Alamin [Notifications of those who write for the Lord of the Worlds], Section: the wisdom in permitting men to have multiple partners but not women