#6698

Narrated Sa`id bin 'Ubada Al-Ansari:that he consulted the Prophet (ﷺ) about a vow that had been made by his mother who died without fulfilling it. The Prophet (ﷺ) gave his verdict that he should fulfill it on her behalf. The verdict became Sunna (i.e. the Prophet's tradition)

حدثنا ابو اليمان، اخبرنا شعيب، عن الزهري، قال اخبرني عبيد الله بن عبد الله، ان عبد الله بن عباس، اخبره ان سعد بن عبادة الانصاري استفتى النبي صلى الله عليه وسلم في نذر كان على امه، فتوفيت قبل ان تقضيه. فافتاه ان يقضيه عنها، فكانت سنة بعد