ANSWER:

Its not permissible to touch her private part when she is bleeding because the menstrual blood is najis.

He should repent to Allah and not do it again.

There is no kaffarah for this.

QUESTION: If a husband inserts his finger into his wife’s vagina (to the point she is satisfied) while she is menstruating, is this haram? If it is haram, and he did it without knowing that it was prohibited, is there any kaffarah required, or is sincere tawbah sufficient?