Is it permissible for a wife to show her hair, hands, and legs to her husband during the daytime in Ramadan?

A wife is permitted to expose her body parts to her husband during Ramadan and at other times, unless it is highly probable that doing so will invalidate the fast of either of them through ejaculation or intercourse. In such a case, it becomes prohibited to prevent a means to a forbidden act, for means share the rulings of their ends, and a means to the unlawful is unlawful.