Sunan an-Nasa'i #3660 · The Book of Wills

Sunan an-Nasa'iIt was narrated that Al-Harith bin Miskin said
Sunan an-Nasa'i · Book 30 · The Book of Wills
Sunan an-Nasa'i · كتاب 30 · كتاب الوصايا
"From Sufyan, from Az-Zuhri, from 'Ubaidullah bin 'Abdullah, from Ibn 'Abbas, that Sa'd bin 'Ubadah consulted the Prophet 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
قَالَ الْحَارِثُ بْنُ مِسْكِينٍ قِرَاءَةً عَلَيْهِ وَأَنَا أَسْمَعُ، عَنْ سُفْيَانَ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ سَعْدَ بْنَ عُبَادَةَ، اسْتَفْتَى النَّبِيَّ صلى الله عليه وسلم فِي نَذْرٍ كَانَ عَلَى أُمِّهِ فَتُوُفِّيَتْ قَبْلَ أَنْ تَقْضِيَهُ فَقَالَ ‏
"‏ اقْضِهِ عَنْهَا ‏"‏‏.‏
Reference : Sunan an-Nasa'i 3660In-book reference : Book 30, Hadith 50