In The Name of Allah, The Most Merciful, The Bestower of Mercy.

Imam As-Sadi [may Allah have mercy upon him] said:

The Shariah established the permissibility of good things including varied foods, beverages, clothes, the union of marriage, etc. It approved everything good and beneficial, including all types of grains, fruits, the meat of every marine animal without exception, (footnote a) as well as (many) land animals. Except for what is bad and destructive to one’s religious affairs, intellect, body, or wealth, it did not forbid anything from these things. (footnote b) What Allah permitted for the people is a result of His generosity and the virtue of the religion He has ordained, and what He forbade is a result of His kindness and the virtue of the religion He has ordained because He only forbade what harms the people. And the virtuousness of something is attached to its wisdom and welfare, as well as a safeguard against harm.

The same holds true for marriages that Allah has allowed (footnote c), and a man is allowed to wed the women he wishes – two, three, or four because of the benefit that is attained by both parties and the harm that is repelled. (footnote d) A man is not allowed to marry more than four free women at once due to the potential for wrongdoing and a lack of justice in such a situation. In addition, he is advised to limit himself to one wife if he fears that he would be unable to do justice and (would fail to adhere to) the divine ordainments of marriage. And, while marriage is one of the greatest blessings and necessities, divorce (is permissible) lest a person’s life be spent with someone who is neither suitable nor agreeable, forcing them to remain in difficulty and severe hardship. (footnote e) Allah said:

إن يتفرقا يغن الله كلا من سعته

But if they separate (by divorce), Allah will provide abundance for every one of them from His Bounty. [Surah An-Nisaa. Ayah 130]  (1)
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Footnote a:

https://abukhadeejah.com/concepts-of-halal-and-haram-as-it-relates-to-food-and-drink-islam-4-1/
https://www.salafisounds.com/bulugh-al-maram-the-book-of-purification-a-clarification-that-all-sea-creatures-are-halal-to-eat-by-abu-khadeejah-lesson-4/

Footnote b:

Read articles and listen to audio by Shaikh Abu Khadeejah [may Allaah preserve him]: https://abukhadeejah.com/the-meat-of-the-muslims-and-the-meat-of-the-jews-and-christians-halal-and-haram-islam-4-3/

https://abukhadeejah.com/muslim-attitudes-to-alcohol-and-other-intoxicants-and-their-apparent-effects-upon-societies-islam-4-4/

Footnote c:

Seeking Marriage and the Marriage Ceremony in Islam (Islam 5.1)

Footnote d: 

Is polygamy a practical and pragmatic solution to the prevalence of unmarried women and spinsters in society? Shaikh Sālih Al-Fawzān.

Footnote e:

https://abukhadeejah.com/chapter-of-talaq-divorce-and-its-rulings-from-bulugh-al-maram-with-shaikh-al-fawzans-explanation-introduction/

Why Homosexuality is Prohibited in Islam. Must read for Muslim parents wanting to raise their children upon traditional family values with clear, firm identities built upon immutable biological realities. Print copy (206 pp) available from: http://www.islamhomosexuality.com/hs/

[Ref 1: Ad-Durra Al-Mukhtasar Fee Mahaasin Deen Al-Islaamiy. pages 24-25. slightly paraphrased]