Oaths and Vows
Bulugh al-Maram #1573
كتاب الأيمان والنذور
وَعَنْ اِبْنِ عَبَّاسٍ رَضِيَ اَللَّهُ عَنْهُمَا قَالَ: "اِسْتَفْتَى سَعْدُ بْنُ عُبَادَةَ - رضى الله عنه - رَسُولَ اَللَّهِ - صلى الله عليه وسلم -فِي نَذْرٍ كَانَ عَلَى أُمِّهِ, تُوُفِّيَتْ قَبْلِ أَنْ تَقْضِيَهُ ? فَقَالَ: "اِقْضِهِ عَنْهَا" مُتَّفَقٌ عَلَيْهِ
Narrated Ibn Abbas (RA):
Sa'd bin Ubada asked Allah's Messenger (ﷺ) for a ruling regarding a vow taken by his mother who had died before fulfilling it, and he said, “Fulfill it on her behalf.”.
وَعَنْ اِبْنِ عَبَّاسٍ رَضِيَ اَللَّهُ عَنْهُمَا قَالَ: "اِسْتَفْتَى سَعْدُ بْنُ عُبَادَةَ - رضى الله عنه - رَسُولَ اَللَّهِ - صلى الله عليه وسلم -فِي نَذْرٍ كَانَ عَلَى أُمِّهِ, تُوُفِّيَتْ قَبْلِ أَنْ تَقْضِيَهُ ? فَقَالَ: "اِقْضِهِ عَنْهَا" مُتَّفَقٌ عَلَيْهِ
Sa'd bin Ubada asked Allah's Messenger (ﷺ) for a ruling regarding a vow taken by his mother who had died before fulfilling it, and he said, "Fulfill it on her behalf." .
— Bulugh al-Maram, Hadith 1573