Are they sinful if the husband inserts the shisha hose into his wife's vagina with her consent?

Fondling one's wife is commendable and a part of good companionship, but it must be within the bounds of Islamic etiquette. What the husband did by asking his wife to smoke cigarettes is forbidden and impermissible. The wife is not permitted to enable him in this, as it is seeking pleasure in a way that Allah has not made lawful, and it falls under the aggression mentioned in His (the Most High) saying: "except from their wives or those whom their right hands possess, for indeed, they will not be blamed - But whoever seeks beyond that, then those are the transgressors." This act may lead to habitual deviance and turning away from what Allah has made lawful, which negatively impacts the chastity intended by marriage.