Is there any expiation (Kaffara) if I engage in intercourse with my wife while she observes Qadha Fasting of Ramadan and she is unmindful of her Fasting? If so what is the ruling on it?
Before the act of intercourse, if one was unmindful of being observing Fasting and remembered so after the act of intercourse, in such a status the Fasting does not become void. Nevertheless even if he was mindful of being in the state of Fasting before the act of intercourse, only a Qadha Fasting would be compulsory on him and not Kaffara (expiation) since the Fasting was of Qadha Ramadhan and not of Ramadhan.
كما في الدر المختار:( أذا أكل الصائم أو شرب أو جامع ) حال کونه ( ناسياً)في الفرض والنفل اھ
وفي الشامية تحت:( قوله في الفرض) ولو قضا أو كفارة اھ(2/394) ۔
وفيها ایضاً:ان الكفارة انما وجبت لهتك حرمة شهر رمضان فلا تجب بافساد قضائه ولا بافساد صوم غیره اھ(2/409) ۔
وفي الهندية:وعلى المرأة مثل ما على الرجل ان كانت مطاوعہ اھ (1/305) واللہ اعلم
Fasting does not break by discharge of Mazi (pre-coitus discharge)
English 0 Invalidators of Fasting