If a husband has intercourse with his wife during her third menstrual period before she performs ghusl, is it considered a raj'ah (taking back a wife during the waiting period)?

Question:
He says: Honorable Shaykh, may Allah grant you success, if a husband has intercourse with his wife during her third menstrual period before she performs ghusl, is it considered a raj'ah?

Answer:
Yes, it is considered a raj'ah, but this act is forbidden (haram) and he will be sinful for it, because intercourse with a menstruating woman is forbidden. Yes.