As a precursor to any explanation on this issue, we must first have a very clear understanding of the concept of marriage in Islam and most people in the world and find out why this question has arisen.

According to the Quran: "It is He [God] who created you from a single soul, and made from it its mate, that he might find comfort with her" (7:189)

Obviously, there are other requirements for a person to fulfill when they decide to get married but Quran names comfort before anything else; that is most probably because the fulfillment of all the other needs also leads to the ease of mind and inner peace.

More interestingly, however, it is not only the holy Quran that says getting married is for the purpose of comfort; having a quick search on the internet makes you realize how all people around the world marry mostly for this emotional purpose, as well:

“…there is an important but neglected positive aspect that explains why people voluntarily enter into commitments like marriage: it is a way of expressing your love and devotion to another person. Not the only way, of course, but a well-established and particularly declarative way…” [1].

Monogamy is the best form of Marriage in Islam

To fulfill this emotional need of a person, the only acceptable form of marriage which is agreed upon by almost all psychologists, and is also recommended by Islam is monogamy. It is within the monogamous type of marriage that all the equal rights of men and women are preserved.

The feelings of love, commitment, loyalty, security, trust, honor, and respect as well as many other benefits [2] can be fully achieved when one has only one spouse.

Why, then, Islam Permits Polygamy for Men?

The reason has been explained in a comprehensive article. Based on what is discussed there, nowhere in the Quran, you can find a verse that suggests or encourages polygamy among men to attain more pleasure or to satisfy their carnal desires; there are no positive or negative comments on this regular unlimited tradition of the Arab culture.

Instead, the holy Quran imposes restrictions upon it and introduces it as a remedy to a social problem, i.e., the excess number of women in need of marriage over marriageable men, like at the time of war, etc.

Why can’t women have multiple husbands and polyandry marriage?

Having discussed the concept of marriage in Islam and the limited law of polygamy which is introduced as an exception in case of special social needs, and nothing against the equality of men and women, do you still find the above question unanswered?

If yes, here are some reasons why polyandry is forbidden for women:

It destroys the family which is the foundation of a healthy society. It is usually NOT easy for a woman to perform her duties as a wife and a mother despite having several husbands.

It is against the nature of women and also inconsistent with men's innate desire for exclusivity and love for his wife and children [3].

It adversely affects women’s health, since women with multiple husbands are more prone to STDs.

It increases sterility among women which will result in population problems.

It may cause identification problems for the conceived child.

It may cause identification problems for the conceived child, which will ultimately lead to legal troubles.

These reasons may clearly show why polyandry is uncommon and frowned upon among Muslims and most people in the world. The Islamic point of view on this issue, however, can be summarized as: “Allah desires ease for you, and He does not desire hardship for you” (2:185), and Allah knows best what is good for you.

References:

1. get married
2. being monogamous
3. women's marriage

“Your Lord has decreed that you shall not worship anyone except Him, and He has enjoined kindness to parents. Should they reach old age at your side one of them or both do not say to them," Fie!" And do not chide them, but speak to them noble words” (17:23). Sitting on the porch of her house, with a deep frown on her face, she seemed absorbed by some unending thoughts. She did not know where she was, neither the boy who was so kindly and attentively taking care of her like a kind nurse, nor the deep unknown feeling that steered within her when he helped her. The only thing she remembered, was that her beloved husband had died and she was left alone.

It had been so many years since the mirror in her room reflected the view of a white-haired, withered, old woman sitting in a wheelchair. But still, she wanted to solve the mystery of the boy’s identity. “Someone must have hired him to take care of me,” she thought. “But who? I’m sure I have no one.”

Instantly, the door of the house opened, and the mysterious young nurse appeared, wearing a big and cheerful smile and a warm, loving look on his face [i][ii] [1]. He had brought her pills. As usual, he put the pills one by one and patiently in her mouth and gave her water to swallow them.

Then kissed her on the forehead and hugged her tightly. She remembered the days when she did not feel good. When she shouted and cursed him violently. She also remembered his patient face at those moments, when he was trying so hard to hold back his tears, taking her hands and kissing them. “What kind of a nurse is he?” she wondered. Respect was an inseparable part of his behavior toward her, always observing not to raise his voice, not to walk ahead of her, and not to act in a way that would make her feel ashamed and humiliated [iii] [2].

She did not remember if she had ever asked him who he was. So, she gathered her courage to ask and went inside. Entering the house, she saw a man sitting on the couch, arguing on an apparently serious matter with her nurse. “Let’s not bother them,” she thought and turned her wheelchair toward her room, but suddenly something caught her attention.

The man was shouting so she could not help hearing his words: “she does not remember you, not even your name and you are wasting your time here nursing her? What about your job? You are a successful manager for GOD’s sake!” The old woman turned to the boy to see his face. For the first time, she saw the look of rage in him: “She doesn’t, but I do. She is my mother, and I will take care of her to my last breath. “For the record, I became what you say I am, because of her.”

He suddenly felt the weight of the old woman’s look on him. Tears fell on her cheeks irresistibly. After all, the mystery had been solved: her kind and a generous nurse was her loving son, her one and only child.

The next day, when she woke up, the first thing she wanted to see was the face of her nurse, his smile, his kind look. She did not know his name or that why he was there, but she felt sure that her patient, loving and a nice nurse would never ever leave her alone.

Notes:

[i]. The Messenger of Allah (peace be upon him and his family) said: “Every righteous child who casts a look of mercy and affection upon his parents shall be granted, for every look of his, Rewards equivalent to that of an accepted Hajj.”

[ii]. The Messenger of Allah (peace be upon him and his family) has said: “The look of a child towards his parents out of love for them is an act of worship.”

[iii]. Imam as-Sadiq (peace be upon him) has said (in regards to one’s parents): “Do not cast your gaze upon them except with love and compassion; do not raise your voice above theirs; do not raise your hands above theirs; do not walk ahead of them.”

References:

1. 'Allama Majlisi, Bihar al-Anvar, V. 74, p. 73
2. ibid, V. 74, P. 79