Sunan an-Nasa'i 3659
سنن النسائي#3659Sahihأَخْبَرَنَا الْعَبَّاسُ بْنُ الْوَلِيدِ بْنِ مَزْيَدَ، قَالَ أَخْبَرَنِي أَبِي قَالَ، حَدَّثَنَا الأَوْزَاعِيُّ، قَالَ أَخْبَرَنِي الزُّهْرِيُّ، أَنَّ عُبَيْدَ اللَّهِ بْنَ عَبْدِ اللَّهِ، أَخْبَرَهُ عَنِ ابْنِ عَبَّاسٍ، قَالَ اسْتَفْتَى سَعْدٌ رَسُولَ اللَّهِ صلى الله عليه وسلم فِي نَذْرٍ كَانَ عَلَى أُمِّهِ فَتُوُفِّيَتْ قَبْلَ أَنْ تَقْضِيَهُ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " اقْضِهِ عَنْهَا ".
It was narrated that Ibn 'Abbas said:"Sa'd consulted the Messenger of Allah about a vow which his mother had to fulfill, but she died before doing so. The Messenger of Allah said: 'Fulfill it on her behalf
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 30:49