You can Pretty much watch his expression During the Half Engagement Ceremony, His expression during the hospital scene. During the engagement also you could have notice that Kabir was reacting to Rukshar when he was asked to take the Dulha Seat (assuming that he and rukshar may get engaged) This clearly portrayed he never wanted to marry Rukshar in any which way. But his expressions changed when Zara was called and also when he has to show his hand for the Ring he did it himself without anyone's insistence. Like wise he made her wear the Ring without hesitation by holding her hand himself. Post engagement Ceremony he mentioned to Zara that the engagement is over so Koi Faydha Nahi. I had a Feeling that at that time itself Kabir was sure that this wedding cannot be stopped and he accepted it some where.
But he thinks that as Zara is not interested in the Marriage and she may say Naa during the Nikkah and he doesn't want that Beizathi for his Family in that Mehafil. So he is insisting his Father to stop the Marriage so as to avoid that Situation. But Shebhaz Plays the mind game he is sure that Zara would not cause such an embarrassing situation to her father as she couldn't do anything during the engagement like wise she couldn't do anything during the NIkkha. Bcoz its much much more easy to refuse things during that engagement. Whereas during Nikkha if she does that it would be Very Ugly.
Kabir would Never ever say Naa for this Nikkha - My assumption. His desperation to meet Zara before the wedding is to know her mindset as he is nervous and never wanted any embarrassment for both the Families. He is even worried for Qazi Sab too. You could have notice this behavior of Kabir during that Press Scene where he protected Qazi Sab and Zara by going against his father.
Kabir is a more level headed, practical, understanding, Soft, Honest, God fearing Guy. He also doesn't like the factor that Zara and himself being pushed for this Marriage against their wish. But He understand the situation and the helplessness of everyone.
When it come to Rukshar. Girl u wont get what you want. You already Lost the Battle. But Sure to make enough Havoc in the life of Zara and Kabir.
Though Polygamy is allowed in Islam. Its allowed for different reasons but Islam insist on Marrying One Girl and live a Good Life with that One girl. Islam Even insist on One Man One wife.
Allows Polygamy with Conditions.
1. With the Consent of the First Wife. This Comes to play when she have some Health Problems like not able to Produce babies, Long term Sickness or Something of that Kind situations. Otherwise who would like to share the Husband. Here the Option is to treat his First wife as Wife and also Support her Morally and Financially. So that during her tough times she was not left alone by her husband for other reasons like one man one wife and he was forced to divorce her.
2. When the Husband Is able to Treat all his wives equally. Quaran Sherrif itself is saying that it is not possible by any one to treat their wives equally so its better to avoid that. Obviously Quaran is Not for Polygamy.
This Concept of Marrying more than one Wife was done by Prophet Mohammed (PBOH) and was allowed During the Time of a War Called "UHAAD" . Then Lot of men died in the War because of that Many widows and Bread winner less families and Less No. Of Men and More No. Of Women in the Society. There were too many problems and anti- social elements were there like thefts, prostitution, poverty etc. So as to avoid that situation Prophet Mohammed (PBOH) has allowed this polygamy then.
Its not mandatory or Just like that anyone can marry and Divorce a women. Islam give more protection to women. Against Dowry, For Mehar Giving the Security to the girl even before she is touched by her Husband. Most hated Thing By Ahllah is Divorce. When its come to Triple Thalaq. Islam insist on Reconciliation more. As per my understanding. When the husband announce the first Thalaq He and the wife has to stay in the same bedroom for six months. If they are not able to reconcile then he can announce his second Thalaq. Then they both should live in the same house for 6 months again if they are not able to reconcile then he can announce the third thalaq. So enough opportunity to reconcile their relationship should be given. So I am Sure. The Story would be more Informative in terms of Clearing the Misconstrued part of Islam especially in terms of Thalaq and Polygamy.