Question 5: Is it permissible for a husband to have vaginal sex with his wife from her back with or without an excuse, or is it impermissible?
Answer: It is permissible for the husband to have sexual intercourse with his wife from the back as long as they will have vaginal and not anal intercourse. Anal intercourse is unlawful in any way according to the saying of Allaah (Exalted be He)… read more here.
Question 4: Is it permissible for a man to enjoy the body of his wife whether from the front or from the back even her buttock without having anal sex?
Answer: It is permissible for a man to enjoy the entire body of his wife except the anus. He must keep away from having sex during her menstruation period, post-childbirth and Ihraam for Hajj or `Umrah (minor Hajj), until they take off their Ihraam… read more here.