It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) prescribed a penalty of one dinar for intercourse with a menstruating woman, and if a man fulfills his desire with her after the blood has stopped but before she has performed ghusl, then in that case half a dinar is obligatory for intimacy, and all this detail is transmitted from the Prophet (peace and blessings be upon him).