Does an oral divorce from a prisoner in a normal state count, even without witnesses, and is it permissible for the divorced woman to remarry Islamically thereafter without a court order?

If a woman brings evidence of her husband divorcing her, she is permitted to marry after her waiting period (iddah) has expired. However, if she does not bring evidence, the default is that she may not marry anyone else, and this ruling is further emphasized if the husband denies the divorce.

As for a marriage contract that is not registered in the courts, it is valid if it fulfills the conditions and pillars of marriage according to Islamic law. Its registration is a necessity for preserving rights.