Is it permissible to eat al-maskhan for marital intimacy, and sleep without ghusl or tayammum due to illness resulting from exposure to water?

It is permissible to consume the aforementioned food if it is free from anything that would necessitate its prohibition, such as fear of harm or sorcery. Even if the eater knows they will not be able to perform ghusl (definition) or wudu afterwards due to fear of harm, tayammum (definition) becomes obligatory for them at that time. This is more deserving of permissibility than intercourse for someone lacking water. The fear of harm must be based on experience or the advice of a skilled physician. If a trustworthy physician advises that ghusl is harmful after consuming the food, then one should resort to tayammum until the fear of harm subsides.