The compiler mentioned that one who intends to commit zina (unlawful sexual intercourse) with a man’s wife may be killed; is this applied by analogy to one who intends to commit zina with his sister or…?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: The compiler (may Allah have mercy on him) mentioned that one who intends to commit zina with a man’s wife may be killed to repel the aggressor. Is this applied by analogy to one who intends to commit zina with his sister or his daughter?

Answer:
He defends all his prohibited relatives, and even a Muslim defends the honor of his brother. It is obligatory for a Muslim to defend the honor of his brother as he defends his own honor. Yes.