There seems to be some confusion as to the reason Muslim men in the 19th century had multiple wives. Below is an excerpt from a longer article on Wikipedia that explains the scriptural basis for polygamy.
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Bold added for emphasis.)
Scriptural basis for polygyny
The verse most commonly referred to with the topic of polygyny is Verse 3 of Surah 4 (An-Nisa [Women]). A translation by Yusuf Ali is shown below:
If ye fear that ye shall not be able to deal justly with the orphans, Marry women of your choice, Two or three or four; but if ye fear that ye shall not be able to deal justly (with them), then only one, or (a captive) that your right hands possess, that will be more suitable, to prevent you from doing injustice.
—
Qur'an, Sura 4 (An-Nisa), Ayah 3[1]
("
One that your right hands possess" means a slave.) At first glance, this can be interpreted in many different ways, depending on one's agenda. However, it is important to understand the verse in context of both the Qur'an as well as the historical context when it was revealed. These Verses were revealed after the
Battle of Uhud, in which many Muslim men were killed, leaving widows and orphans. Thus, many[
who?] argue that these Verses have been revealed "because of Allah's concern for the welfare of women and orphans who were left without husbands and fathers who died fighting for the Prophet and for Islam.
It is a verse about compassion towards women and their children; it is not about men or their sexuality."[2]
In the Hadith collection compiled by al-Bukhari, the historical context of Verse 4:3 is further explained when ‘Ursa narrates
that he asked 'Aisha about the Statement of Allah: 'If you fear that you shall not be able to deal justly with the orphan girls, then marry (other) women of your choice, two or three or four; but if you fear that you shall not be able to deal justly (with them), then only one, or (the captives) that your right hands possess. That will be nearer to prevent you from doing injustice.' (4.3) 'Aisha said, "O my nephew! (This Verse has been revealed in connection with) an orphan girl under the guardianship of her guardian who is attracted by her wealth and beauty and intends to marry her with a Mahr less than what other women of her standard deserve. So they (such guardians) have been forbidden to marry them unless they do justice to them and give them their full Mahr, and they are ordered to marry other women instead of them."
—
Collected by Muhammad al-Bukhari, Sahih al-Bukhari[3]
The Qur’anic context can be explained by Surah 4:2, which states "To orphans restore their property (When they reach their age), nor substitute (your) worthless things for (their) good ones; and devour not their substance (by mixing it up) with your own. For this is indeed a great sin."
[4]Therefore, the first part of verse 4:3 is dealing with orphan women who are under the protection of a male guardian, and it is advising the guardian to "deal justly" with the orphans.
In the second part of Verse 4:3, the Qu’ran states "but if ye fear that ye shall not be able to deal justly (with them), then only one, or (a captive) that your right hands possess, that will be more suitable, to prevent you from doing injustice."
[1] If a man cannot deal justly with more than one wife, then he must marry only one.
It is clear that this quote was revealed out of compassion towards women, and not as a means to please male sexuality, which is a common modern interpretation of such verses.[5]
Putting the verses regarding polygyny into the broader Qur'anic context by examining the nature of marriage in Islam helps understanding them. The Quran [4:21- "And how could ye take it when ye have gone in unto each other, and they have Taken from you a solemn covenant?"
[6]] refers to marriage as a mithaq, i.e. a solemn covenant or agreement between husband and wife, and enjoins that it be put down in writing (4:21). Marriage is more than just a "solemn covenant" however, with Surah 30 verse 21 stating "And among His Signs is this, that He created for you mates from among yourselves, that ye may dwell in tranquillity with them, and He has put love and mercy between your (hearts): verily in that are Signs for those who reflect."
[7] Love and mercy are very much a part of marriage as described in the Qur'an. Although the Qur'an may prescribe different roles for males (husbands often seen as the provider), the equality between husband and wife is promoted when it is dictated in Surah 2 verse 187 that "They (your wives) are as a garment to you, and you are as a garment to them."
[8] It is thus clear that there is more to polygyny in the scriptural basis of the Qur'an then simply the citation of Verse 4:3.
From:
Polygyny in Islam - Wikipedia