What is the religious ruling on a marriage in which it was discovered that the wife has a chronic illness (diabetes) that she concealed from the husband before the contract, and is the contract considered valid, and is the husband entitled to annul it, and is the wife entitled to compensation in case of annulment, and is divorce in this case considered arbitrary divorce?

The wife's diabetes is not considered a defect that permits the husband to annul the marriage, because it does not prevent enjoyment. However, it is preferable for her to inform the husband about it to avoid deception. As for defects that permit annulment, such as insanity, they must be claimed immediately; otherwise, the right to do so is forfeited. The marriage contract is valid, and in the event of divorce, the wife is entitled to all her rights, including dowry and maintenance. Divorcing a wife due to her illness is not an arbitrary divorce without cause; rather, it is a divorce with a reason.