Is it permissible for a wife to obey her husband in engaging in anal sex if he threatens to commit indecency with others should she not obey him, knowing the act is forbidden, and given her love for her husband and her keenness to preserve her home?

It is forbidden for a man to have anal intercourse with his wife, and it is forbidden for the wife to agree to it, because the Prophet, peace and blessings be upon him, said: "Cursed is he who has intercourse with his wife in her anus." The wife must not submit to the husband's request because it is a grave sin, and it is not permissible for her to cooperate with him in disobedience. Rather, she should continue to advise him and turn to Allah Almighty with supplication, prayer, and remembrance.