As Sallam wa Alikum. My question is regarding intercourse during the 5th day of menstruation. I got married a year ago and after one month I will be going back to Saudia. I asked my wife if she is confident that she is not having any blood flow. she said she is confident that she is not having blood flow as it is the 5th day.. She performed Ghusl and we had intercourse but after intercourse i found blood on my penis. I asked my wife to go to the toilet and see if she is having blood flow. After coming out she told me that the blood was Red in Color not Dark. If it was a menstruation bleeding and I have committed sin what is the kaffarah for that and what dose islam say about that?