Muslim scholars have expressed their opinions on this verse:
The first opinion: According to ‘Ā’isha, this verse refers to the orphans’ custodians.
They were infatuated with the beauty of the orphan girls in their care and married
them at a reduced dowry. The verse directs these men to pay the girls a fair dowry.
However, if they feared that they would not be able to act equitably in this regard,
then they should marry foreign women.
The second opinion: After the Qur’ān demanded the just dealing of orphans
(Q 4.2), men felt intense pressure lest they failed to be equitable. Therefore, the
following verse tells them, “[I]f you were afraid to neglect justice to orphans’ rights
and are in distress over it, then also be afraid to neglect justice to women, and
so reduce the number of women you marry.”
It was mentioned by Sa‘īd Ibn Jubayr, al-Sadī, Qatāda, and Ibn ‘Abbās that as far as the orphans’ money was concerned, Arab men felt pressured to act responsibly, but they did not feel that same responsibility when it came to women, even if they married ten or more women. Therefore, the verse directs men, “[A]s you fear being unjust with orphans, likewise feel an obligation towards women and marry only up to the limit that
would avoid injustice.”
The third opinion: Muslim men felt hard-pressed to take care of orphans, so they
were told, if they feared for the rights of orphans, so be afraid of adultery, and,
thus, marry only the number of women allowed and try not to circumvent what is
prohibited.
The fourth opinion: It was said that married men with several wives were taking
care of orphan girls and when they spent money on their wives, the money came
from the orphans’ allotment. As a result, the verse came to warn against this
shameful conduct and request that men be satisfied with a maximum of four wives
as a way to eliminate the cause of this misbehavior. If they were worried that they
would be unjust to even four wives, then they were instructed to marry just one.
Explains the commentary found in al-Muharir al-Wajīz: “If you feared the lack of
money to do injustice to orphans, then be limited.”
Notice the contradiction. One suggestion declares that Arabs were accustomed to
seizing the money of orphans for personal gain, either through reducing the dowry
(the first opinion) or through direct misappropriation of orphans’ money for personal
reasons, such as spending it on their wives (the fourth opinion).
Meanwhile, the second opinion states that men were trying to be fair to orphans
and that was why the Qur’ān asks the man to deal justly with his wife (or wives) in a
way similar to his conduct with orphans. However, this opinion does not agree with
the context of the verse, because the preceding verse warns men against robbing the
orphans of their money, a statement that insinuates they are guilty of robbing orphans.
Notice the verse does not tell Muslims, “as you fear being unjust with orphans, so fear
similarly with women,” but uses the phrasing, “if...then.” In other words, it shows a
relationship between the two.
As for the third opinion stating that the verse pertains to adultery, it is a weak opinion
because the verse is speaking of marriage. Even if we accept the third opinion, the
conditional connection “if...then” remains incomprehensible. Nevertheless, none of
these four opinions gives the reader a clear reason to link the fear of being unjust with orphans’ money and the solution, marrying multiple women of their choice.