When a man had intercourse with his wife while she was menstruating, the Prophet ﷺ would order him to give half a Dinar in charity.
حدثنا عبد الله بن الجراح حدثنا أبو الأحوص عن عبد الكريم عن مقسم
كان الرجل إذا وقع على امرأته وهي حائض أمره النبي ﷺ أن يتصدق بنصف دينار
[Sahih] Reported by Tirmidhi, in the Book of Purification, chapter on what has been mentioned regarding the atonement for that, hadith no. 137, from the hadith of Abdul-Kareem Abu Umaya, and see hadith no. (640), for it serves as a corroborating witness for it.