What is the ruling on a woman refusing to sleep with her husband, whom she was forced to marry and does not love, and what is the ruling on the husband's action of having intercourse with her by force?

What the brother did by forcing his sister to marry someone she did not desire is an injustice. She had the right to seek annulment, but her consent after the marriage nullifies her right to annulment.

She must fulfill her husband's right and not refuse intimacy with him unless she has a valid excuse; otherwise, the angels will curse her.

If she despises him and cannot fulfill his rights, she may request a khul' (divorce initiated by the wife) from him or refer the matter to a judge. She must weigh between enduring him and cohabiting with him amicably, or seeking a khul'. It is not permissible for her to remain under his marital bond while refusing intimacy with him.