Some Lessons from Jurisprudence (Fiqh)
The Book of Marriage (nikah)
First the conditions of the actual contract are discussed, such as the muharam, the people for whom to marry each other is forbidden, such as father and daughter, mother and son, brother and sister, and so on. The two types of marriage are included: permanent and temporary. Disobedience to the husband by the wife and the ill-treating of the wife by the husband and the obligation of the man of the house to economically provide for his wife and children are part of this book. There are a few other issues that are also discussed.
Lesson Six: Unilateral Instigations (iyqa'at)
This part, according to the classification we are following, consists of iyqa'at, which, as has been explained, are the actions in need of a contract, but not of a two sided contract; a unilateral contract is enough. There are fifteen of these:
The Book of Divorce (talaq)
Divorce here means the cancelling of the marriage compact by the husband. Divorce is either ba'in or raj'i. Ba'in is the kind of divorce wherein the man has no right to return to the woman. A raj'i divorce is that in which the man can return. What this means is that for as long as the woman's special period of restraint ('iddah) has not come to an end, the man can return to the woman and thus nullify the divorce. A divorce is a ba'in divorce either because the wife has no 'iddah, like a divorced woman with whom the husband has not had sexual intercourse, or a woman who has reached the age of menopause, or because, even though the woman must keep 'iddah, the nature of the divorce disqualifies the man's right to return, like the third consecutive divorce of that couple, in which case, until she marries someone else who has sexual intercourse with her and then himself dies or divorces her and she keeps another 'iddah, the first husband cannot re-marry her.
It is a condition of divorce firstly that, at the time of the divorce, the woman is clean of her monthly period. Secondly, there must be two just witnesses present when the contract of divorce is recited. Divorce is divinely detested. The Prophet of God tells us :"The most-detested permissable (thing) before God is divorce".
The Book of Divorce Wholly or Partly Instigated by the Wife (khul'a and mabarat)
Khul'a and mabarat are two types of ba'in divorce. A khul'a divorce is a divorce motivated due to the wife being dissatisfied with the marriage and giving the husband something or by releasing him from all or part of the mehr  so as to persuade him to divorce her. In this case, just by the man divorcing his wife, he is disqualified from returning to her, unless she wants to take back what she ceded, in which case the man has the right to return to her.
Mabarat is also a type of ba'in divorce, like khul'a with the difference that both parties are dissatisfied with the marriage, while the wife still gives the husband a sum to divorce her. The other difference is that the given sum in khul'a divorce has no specified limit, but in mabarat it is a condition that the sum be not more than the amount of the mehr.