The husband is ill and needs to be cared for in one place. How is the rota arranged then?

When it is the husband who is ill, the rota is adjusted to the needs of treatment, and this is not injustice if handled honestly. A sick husband may need to stay somewhere that makes care easier or near a hospital. Choose the place based on medical need, not preference, and explain the situation to all the wives. The wives can take turns caring for him or agree on the best way to support him. When he recovers, restore the fair cycle of the rota, and make up days if anyone was clearly neglected without need. The spirit of justice is still kept even though its form changes in an emergency. Refer to the religious office if a dispute arises. See the rota in practice.