Practice Relative frequency of khul' has been noted in studies of Istanbul, Anatolia, Syria, Muslim Cyprus, Egypt and Palestine. In studies of Mamluk Egypt and the Balkans under Ottoman rule, khul' was shown to have been the principal means of divorce. Women employed a number of strategies to force a settlement from their husbands. Some neglected their marital and household duties, making family life impossible for the husband. Others demanded immediate payment of the deferred mahr, knowing that the husband had no means to comply and would be jailed if he failed to do so. In some cases the khul' contract involved no compensation from the wife, while in other cases women would waive all of their husband's financial obligations. According to studies of the Ottoman Levant, various court procedures were put in place to ensure that a khul' was not actually a talaq. Nikah halala Jurisprudence Nikah halala (also known as tahleel marriage) is a practice in which a woman, after being divorced by triple talaq, marries another man, consummates the marriage, and gets divorced again in order to be able to remarry her former husband. However such marriages are forbidden in Islam, according to a Sahih graded Hadith which states that Muhammed cursed those who did such marriages. Judicial divorce Jurisprudence A marriage can also be dissolved by means of judicial divorce. Either spouse can petition a qadi court to obtain judicial divorce, but they must have compelling grounds for dissolving the marriage. The court starts the process by appointing an arbitrator from each of their families in order to seek a mediated reconciliation. If this effort fails, the court adjudicates the dispute by apportioning fault for the breakdown of the marriage with the associated financial consequences. Examples of fault are cruelty; husband's failure to provide maintenance or pay the immediate installment of mahr; infidelity; desertion; moral or social incompatibility; certain ailments; and imprisonment harmful to the marriage. Judicial divorce can also be sought over violations of terms stipulated in the marriage contract. Different legal schools recognized different subsets of these grounds for divorce. The Maliki school, which recognized the widest range of grounds for divorce, also recognises wife's hatred for husband as a valid ground for divorce and stipulates a category of "harm" (ḍarar), which gave the judge significant discretion of interpretation. Practice In some areas under Ottoman rule it was hardly possible for women to obtain