The ruling on one who pronounces zihar and then has intercourse before expiating

Question:
May Allah reward you. This questioner asks: What is the ruling on one who pronounces zihar and then has intercourse before expiating?

Answer:
He is required to pay the expiation. If he has intercourse, the expiation becomes established in his liability, and he commits a sin. He commits a sin because he had intercourse before expiating. And Allah (Exalted and Majestic is He) says: . This is a sinner, and the expiation is required of him, having become established in his liability. Yes.