´It was narrated from Ibn 'Abbas' that :` Sa'd bin 'Ubadah asked the Messenger of Allah (ﷺ) about a vow which his mother had made, but she had died without fulfilling it. The Messenger of Allah (ﷺ) said: "Fulfill it on her behalf ."
Hadith Referenceسنن ابن ماجه / كتاب الكفارات / 2132
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه
´It was narrated from Jabir bin 'Abdullsh that :` a woman came to the Messenger of Allah (ﷺ) and said: "My mother has died, and she had made a vow to fast, but she died before she could fulfill it. The Messenger of Allah (ﷺ) said: 'Let her guardian fast on her behalf ."
Hadith Referenceسنن ابن ماجه / كتاب الكفارات / 2133
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:ضعيف, إسناده ضعيف, ابن لھيعة ضعيف مدلس, وحديث ’’ من مات وعليه صيام صام عنه وليه ‘‘ (البخاري:1952،مسلم: 1147) يغني عنه, انوار الصحيفه، صفحه نمبر 455
Hadith Takhrij« تفرد بہ ابن ماجہ ، ( تحفة الأشراف : 2554 ) ( صحیح ) » ( سند میں ابن لہیعہ ضعیف ہیں لیکن شواہد کی بناء پر حدیث صحیح ہے ، ملاحظہ ہو : صحیح أبی داود : 2077 )