It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said concerning the one who has intercourse with his wife while she is menstruating: "He should give one dinar or half a dinar in charity."
In Shu'bah's narration from al-Hakam there is an indication that al-Hakam did not hear it from Miqsam; he only heard it from Abd al-Hamid bin Abd al-Rahman bin Zayd bin al-Khattab, from Miqsam.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحيض / 1513