As far as justice is concerned, Allah (SWT) has revealed the following verse also:
(MY COMMENTS ARE IN CAPS)
If a woman experiences illtreatment from her husband or fears that he might turn away from her, there should be no hesitation in taking corrective action and resolving the matter between them amicably. Conciliation is best. Selfishness is ever present in human psyche. And if you take care to benefit each other and be mindful of God, certainly God is ever Aware of all you do. [God, the Cognizant shows you the best way. 2:228-234, 4:3, 4:19, 4:35, 4:128, 33:49, 58:1 65:14]
(HERE WOMAN=WIFE AND INCLUDES ALL WOMEN IRRESPECTIVE OF WHETHER THEY FALL UNDER THE CATEGORY OF YATAAMA OR NOT)
(It is imperative to realize that women are no less a part of the society. Moreover, they are the custodians of the future generations like a garden that bears flowery plants 2:223.) They ask you to enlighten them further about the Laws concerning women (O Prophet!) Say, “God Himself enlightens you about the Laws concerning them, and the Book which has been recited to you conveys the Decree. You shall restore the rights of the orphaned women to whom you give not what is ordained (their due marital gifts) when you wish to marry them. And God decrees about helpless children, and your duty to treat orphans in a most kind manner. And whatever good you may do, God is ever Aware.” [You shall be especially kind to women who are widowed, orphaned, or left helpless for any reason 2:83, 2:215, 4:3, 2:240, 8:41]
AGAIN THE ABOVE AYAT IS ABOUT WOMEN (WIVES WRT CONTEXT) IN GENERAL WITH EMPHASIS ON YATAAMA, FOR ONE IS MORE LIKELY TO OPRESS A WOMAN WHO DOES NOT HAVE MUCH BACKING - MAN IS BY NATURE SELFISH 4:128 "...Selfishness is ever present in human psyche....")
[Men who have been permitted a second wife for postwar exigencies (4:3) must understand that] You will not be able to deal equally between your wives however much you wish. But do not turn altogether away from one, leaving her as if in suspense between having and not having a husband. Fulfill the rights of each one of them and be mindful of God. Surely, God is ever Forgiving, Merciful. [Your effort is seen 53:40, and He is the Absolver of your imperfections]
HERE BROTHER SHABBIR'S COMMENTS "Men who have been permitted a second wife for postwar exigencies (4:3) must understand that..." ARE BASED UPON THE RULING THAT POLYGAMY IS ONLY PERMITTED UDER CERTAIN EXIGENCIES. WHATEVER THE TRUTH, ALLAH HAS LAID DOWN LIMITS OF JUSTICE (OR INJUSTICE) THAT CAN BE ACCEPTED IN SUCH RELATIONSHIPS. MAN CAN NEVER BE TOTALY JUST EVEN TO ALL HIS OWN OFFSPRING? HOW THEN WILL HE BE 100% JUST WITH HIS WIVES?