Sayyidah Aisha (may Allah be pleased with her) narrates that the Messenger of Allah (peace and blessings be upon him) said: Whoever dies and has fasts due upon him, his guardian should fast on his behalf.
Hadith Referenceالمنتقى ابن الجارود / كتاب الطلاق / 943
Hadith Gradingغلام مصطفےٰ ظهير امن پوري:صحيح
Hadith Takhrijاز غلام مصطفےٰ ظهير امن پوري:«صحيح البخاري : 1952، صحيح مسلم : 1147۔»