صحیح ابن حبان
Ibn Hibban
كتاب الصوم
Book of Fasting
باب الكفارة - ذكر الخبر الدال على أن المواقع أهله في رمضان إذا وجب عليه صيام شهرين متتابعين ففرط فيه إلى أن نزلت المنية به قضي الصوم عنه بعد موته
Chapter on Expiation - If one required to fast two months for intercourse in Ramadan dies before doing so, it is made up on his behalf
1 hadith
Hadith 3530
Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: A woman came to the service of the Prophet Muhammad (peace be upon him). She said: My sister has passed away. She was obligated to fast for two consecutive months. The Prophet Muhammad (peace be upon him) said: What do you think, if your sister had a debt, would you pay it off? She replied: Yes. The Prophet Muhammad (peace be upon him) said: Then Allah’s right is more deserving (that it should be fulfilled).