(35) باب مَنْ مَاتَ وَعَلَيْهِ نَذْرٌ
It was narrated that Ibn 'Abbas said:
"Sa'd bin 'Ubadah came to the Prophet and said: 'My mother died and she had sworn a vow, but she did not fulfill it.' He said: 'Fulfill it on her behalf.'" (ID)
Reference (ID): Sunan an-Nasa'i 3819 (ID)
In-book reference (ID): Book 35, Hadith 59 (ID)
English translation (ID): Vol. 4, Book 35, Hadith 3850 (ID)