If a wife realises after the conclusion of the marriage contract that her husband does not possess a penis, or if after the conclusion of the marriage contract but before having sexual intercourse, or after it, his penis is cut off, or if he has a dysfunction whereby he is unable to have sexual intercourse even if the dysfunction develops after the marriage contract and before having sexual intercourse, or after it, then in all of these cases, the wife can annul the marriage contract without getting a divorce.
If a wife realises after the conclusion of the marriage contract that her husband was insane before the marriage contract, or if after the conclusion of the marriage contract he becomes insane, irrespective of whether this happens after sexual intercourse or before it, or if she realises that at the time of the marriage contract his testicles had been removed or they had been crushed, or that at the time of the marriage contract he had leprosy, vitiligo, or blindness, then in all of these cases, the obligatory precaution is that she must not annul the marriage contract.
But if she does, then the obligatory precaution is that if they wish to continue with their married life, they must conclude another marriage contract; and if they wish to separate, they must get a divorce. In case a husband cannot have sexual intercourse and his wife wishes to annul the marriage contract, it is necessary that she first refer to a fully qualified jurist (al‑ḥākim al‑sharʿī) or his agent.
The jurist will give the husband a one-year respite; if he is unable to have sexual intercourse with his wife or another woman during this period, his wife can annul the marriage contract once the respite period is over.