Is it permissible to manually bring the menstruating wife to climax, and is the insertion of the head of the penis into her anus for moments considered a departure from the faith and a deserving of a curse, and what is the ruling on bringing her to climax between her thighs with the intention of ejaculating in the anus?

A husband's fondling of his menstruating wife's vagina is not permissible, because it is a place where impurity is likely to be encountered, and impurity is forbidden. Also, menstruation is a harmful state that must be avoided. No expiation is required for this act. As for anal intercourse with one's wife, it is absolutely forbidden. The one who commits it does not exit the fold of Islam, even if he is accursed. The intent of the hadiths that indicate the disbelief of the one who commits it is to emphasize the gravity of the sin. Whoever commits this act must offer sincere repentance. A person is punished for his intention to commit a forbidden act, even if he does not carry it out.